WEBVTT 00:05.180 --> 00:05.730 Hi everyone. 00:05.730 --> 00:06.690 Welcome back. 00:06.960 --> 00:14.250 So in this video we're going to finally jump into docker and see how to use it especially on our application 00:14.250 --> 00:14.950 right now. 00:15.060 --> 00:20.850 So if you look at our application right now if you go to that stuff and tutorial one and it's only just 00:20.850 --> 00:28.410 one file app Abdon Dhabi which just has all the logic for the server and you know we now want to start 00:28.440 --> 00:31.960 to change this system into a docker crisis. 00:32.310 --> 00:39.540 Now first of all let's open our system or actually let's leave that till the end and see how you organize 00:39.540 --> 00:42.740 our product first and then see what the requirements are. 00:42.750 --> 00:49.490 Now the first website I want to introduce to you two is Dr. shop and Dogger hub is a place like get 00:49.490 --> 00:58.170 a job as the name might suggest where people store a bunch of darker images that describe different 00:58.170 --> 00:59.040 systems. 00:59.220 --> 01:05.820 So for example if a wall or looking to search for a license anywhere we want a system that has bison. 01:05.940 --> 01:11.220 If we just search for a system that has by then you'll notice here that there is an official image off 01:11.220 --> 01:18.080 by then and I can choose that image up by then so here I click on that and more details. 01:18.630 --> 01:22.170 And so you'll notice here that we have a daquiri image. 01:22.260 --> 01:29.700 And so later on when we're writing the docker file you're going to notice that I'm pulling right away 01:29.700 --> 01:30.580 from my. 01:30.600 --> 01:35.250 And if you're wondering where this is pulling from this is actually where it's falling from. 01:35.250 --> 01:41.220 So there's so many different versions of Python the doctor supports or the official version at least 01:41.870 --> 01:43.580 and you can install any of these. 01:43.590 --> 01:46.770 So we're actually going to be using version number three. 01:46.980 --> 01:51.840 So I just wanted to show you where we are because when we're writing the docker file We're going to 01:51.840 --> 01:53.930 be using from Python's street. 01:54.120 --> 01:58.020 And then you might be wondering well where is he getting this from. 01:58.020 --> 02:04.710 And the answer is from this doctor hub the software ocker itself knows how to get the doctor from from 02:04.710 --> 02:10.830 this place over here from this doctor hub and downloaded onto your local machine without you needing 02:10.830 --> 02:12.480 to do anything. 02:12.600 --> 02:15.120 Now that's you for a doctor out now. 02:15.180 --> 02:20.420 The second thing is we want to start using darker and darker compose. 02:21.290 --> 02:21.960 OK. 02:21.990 --> 02:25.920 So we're going to click on tutorial one and we go in. 02:25.920 --> 02:32.720 And so the first thing the way we're going to be organizing this project is we this this app that DeWyze 02:32.730 --> 02:34.270 actually the web server. 02:34.350 --> 02:38.970 So I'm going to make a new folder here so it's not allowing me. 02:39.350 --> 02:46.300 So up close this and open it again maybe desktop tutorial one. 02:46.470 --> 02:47.010 No. 02:47.170 --> 02:50.300 OK let's try with the termino. 02:50.490 --> 02:58.440 So it's probably just permissions problem so let's go to desktop and then tutorial one. 02:58.500 --> 03:05.500 And so once we're inside we can make a directory and we'll call this directory with. 03:05.540 --> 03:06.160 OK. 03:06.180 --> 03:12.900 So this is where we're going to copy or put all our web application related stuff there. 03:12.990 --> 03:15.750 And so we do. 03:16.020 --> 03:20.290 So that's the. 03:21.090 --> 03:21.640 OK. 03:21.750 --> 03:24.450 So if you're not sure what to do. 03:24.480 --> 03:33.080 Bang bang this is this basically means do the previous operate or command that I just did using sudo. 03:33.090 --> 03:37.500 So it's basically sudo and then just copy this command over here. 03:37.500 --> 03:41.500 So it's much faster than just having to write everything from scratch. 03:41.860 --> 03:49.020 OK so if I have another for if I have for example a database then I would do so to make directory and 03:49.020 --> 03:56.270 then I would make a directory for example such as database D-B. 03:56.310 --> 03:56.900 OK. 03:57.060 --> 04:05.250 So for every different container that you're going to have you have to make a new or folder to store 04:05.250 --> 04:07.110 all the related files to that. 04:07.110 --> 04:11.890 So since we don't have that database for now we're just going to go into web. 04:11.930 --> 04:12.620 OK. 04:12.900 --> 04:18.570 So once we're inside with what we want to do a couple of things we actually want to copy right so we 04:18.570 --> 04:28.280 want Capuzzo to Suder copy and then we want to copy the file from the previous one is called IPY. 04:28.380 --> 04:30.030 And then I want to copy it here. 04:30.260 --> 04:31.210 OK. 04:31.590 --> 04:38.910 So once I've copied my file as I do L.A. and I saw my file you're now Dockery expects to see a file 04:38.910 --> 04:39.850 called docker. 04:39.900 --> 04:45.370 So I'm going to do touch her file and I'm going to explain to you what this is. 04:45.370 --> 04:51.940 In a moment so Ducker always expects in one of these folders to have a file called Doc or file. 04:51.990 --> 04:52.470 OK. 04:52.560 --> 04:56.430 And it has to be spelled in this way and doesn't have any extensions. 04:56.430 --> 04:59.710 OK so you just do touch and then dodgier file. 04:59.940 --> 05:02.270 OK so again you don't. 05:02.670 --> 05:04.500 And now if you do it. 05:04.510 --> 05:08.870 LS We have two files we have added up UI and the knocker file. 05:08.880 --> 05:15.430 Now if you remember in the first few videos are we installed a flask and we installed a flask restful. 05:15.450 --> 05:16.010 Right. 05:16.170 --> 05:23.050 But now we want to tell you that there are some requirements for this web application to run. 05:23.070 --> 05:23.320 Right. 05:23.330 --> 05:25.510 So there are some dependencies. 05:25.510 --> 05:30.980 And so we have to touch requirements requirements that TXI. 05:31.020 --> 05:36.390 And then in this requirements the next year we're going to store all basically all the different libraries 05:36.600 --> 05:39.160 that we need like flask and flask restful. 05:39.270 --> 05:42.860 OK and pseudo again keep her from forgetting it. 05:43.050 --> 05:45.800 And so if we do ls now we have an app that p y. 05:45.810 --> 05:50.370 This is the original application that we wrote and then we have the Dogger file. 05:50.490 --> 05:55.530 And we have that without any extensions and then we have requirements that 60. 05:55.530 --> 05:58.830 Now if we open our sudo at home here. 05:58.950 --> 06:05.400 So let's open an atom in this folder over here to do C and then the first thing is we have free files 06:05.400 --> 06:07.210 right at that p y. 06:07.380 --> 06:13.050 So add up us the same file that we wrote and if you notice you're using flask and flask cresc. 06:13.410 --> 06:18.010 And then Dharker file is just an empty file and requirements XTi. 06:18.030 --> 06:18.520 Right. 06:18.630 --> 06:19.460 OK. 06:19.470 --> 06:25.440 So let's first just jump into dog or file and explain line by line so we're going to read a couple of 06:25.440 --> 06:26.300 lines. 06:26.340 --> 06:31.620 I think we're going to write like five or six lines so it shouldn't be too big and we're going to explain 06:31.620 --> 06:36.560 what each of these lines does in in this what once it starts. 06:36.570 --> 06:42.230 OK so the first thing is we're going to write and write from by then. 06:42.300 --> 06:43.980 So Python 3. 06:44.220 --> 06:47.550 So I'm pulling from Python 3. 06:47.800 --> 06:49.920 So where does this pull from. 06:49.920 --> 06:54.400 Well it pulls from the Web site and I just showed you so it's pulls from the sphere. 06:54.420 --> 06:56.270 This official repository. 06:56.490 --> 07:01.820 So I just do pull from Python 3 so it downloads I three. 07:02.070 --> 07:09.030 OK so once I have this by three actually what you don't know is that the Spice's 3 over here is not 07:09.030 --> 07:12.330 only bytes in but it has a buntu image on top with it right. 07:12.390 --> 07:19.710 So this doctor file doesn't only have up the pipes and installed a pipe and has to have an operating 07:19.710 --> 07:20.850 system with it right. 07:20.930 --> 07:29.040 And so Python 3 has the buntu operating system so when we do this if we was this just a one line what 07:29.040 --> 07:32.990 happens is Ducker pulls this image and it trons. 07:33.030 --> 07:34.900 So this image over here. 07:34.920 --> 07:41.130 So this image on the getup here has its own darker fall so if you notice each of these has a different 07:41.130 --> 07:41.630 doctor. 07:41.680 --> 07:47.500 Also if I click here for example on this Vulg. file you it would take me to. 07:47.640 --> 07:49.180 So this link is OK. 07:49.200 --> 07:50.750 So this link is not broken. 07:50.880 --> 07:56.970 So you would notice here that it actually has another doc or files or if you notice here it's also pulling 07:56.970 --> 07:59.810 from some other images. 07:59.940 --> 08:05.520 And then it's doing a bunch of stuff so so that we have we don't have to write all these bunch of stuff 08:05.700 --> 08:07.860 we just directly pull from it. 08:07.990 --> 08:15.020 And and part of pulling from that Python repository is that it also have an operating system. 08:15.120 --> 08:20.750 So we don't need to define the operating system and everything right can just go right away from bising 08:21.140 --> 08:21.770 from Python. 08:21.770 --> 08:29.500 And so once this line is done then we have a fully working operating system running a buntu. 08:29.690 --> 08:36.370 And it's also running by Sunseri So that was you know super cool very short with just one line of code. 08:36.380 --> 08:42.740 Now the second thing is we're now working inside this docker file over inside this machine. 08:42.740 --> 08:49.370 You can think of the docker file as as giving instructions of how to build a machine from scratch. 08:49.370 --> 08:49.900 Right. 08:50.090 --> 08:56.060 So basically inside this machine right now and I'm building it step by step. 08:56.150 --> 09:04.040 So I'll tell this machine that I want my work directory to be at slash user slash slash user slash source 09:04.040 --> 09:04.980 slash app. 09:05.120 --> 09:05.610 OK. 09:05.750 --> 09:11.060 So what is this so it's basically saying that inside this machine inside this machine that's running 09:11.060 --> 09:11.660 the buntu. 09:11.660 --> 09:16.250 And by then I want my working directory to be user sourced at. 09:16.250 --> 09:22.450 So why why are we treating this well this is just the convention we really work or put our user work 09:22.450 --> 09:25.090 directory in slash or slashed or slash. 09:25.100 --> 09:30.390 This isn't really anything special it's just they the common way people do it. 09:30.680 --> 09:36.640 And so now we can think of it as we have a machine running a buntu with bytes and three. 09:36.660 --> 09:41.800 And our working directories now in this in this here. 09:42.200 --> 09:45.740 Now the second thing we want to do is to copy right. 09:45.740 --> 09:51.950 We have a we want to install that dependencies right before we run our application we want to copy the 09:51.950 --> 09:53.440 requirements that x. 09:53.450 --> 09:56.740 So I'm going to copy and then requirements. 09:57.140 --> 10:04.120 Let's see Rick wired mutants not text and I want to copy it. 10:04.130 --> 10:10.580 So this requirements that decs is copying from here over here from over here and then I'm copying it 10:10.610 --> 10:17.710 all the way to my machine which is running a buntu 16.00 for Python and this is it's working there actually. 10:17.870 --> 10:20.350 So I want to copy it to the current work directory. 10:20.420 --> 10:28.670 So I just added that and then I'm saying run some sync to the machine to the Abunda machine running 10:28.670 --> 10:29.720 by then. 10:29.890 --> 10:36.840 I'm telling it to run Pipp install and then no cache directory. 10:36.860 --> 10:45.890 Make sure there's no cache and then are recursive and then requirements require all these compute this 10:45.890 --> 10:46.550 one Rick. 10:46.670 --> 10:48.330 Why your moments. 10:48.360 --> 10:49.400 Yep there we go. 10:49.450 --> 10:53.440 Requirement is that X so that we're going to tell the machine to run. 10:53.520 --> 10:59.010 And also this machine is up to say it hasn't already passed by then. 10:59.150 --> 11:00.500 So we do it Instow. 11:00.530 --> 11:05.840 No cash there actually to install these requirements that DEXA we're going to install all of these Python 11:06.380 --> 11:07.740 libraries over here. 11:07.790 --> 11:09.930 The dependencies that we need. 11:10.280 --> 11:14.740 And then after that we're going to copy dot dot. 11:14.840 --> 11:17.310 So we are going to copy the current files. 11:17.330 --> 11:22.600 So we're going to copy abduct pre-wire and requirements that text into the system. 11:22.610 --> 11:22.910 Right. 11:22.910 --> 11:27.850 So we're going to copy it into the current working directory and slash user slash or slash app. 11:28.070 --> 11:33.540 So keep in mind that the first part here is what's on your machine right now right. 11:33.550 --> 11:35.360 This is your actual code. 11:35.510 --> 11:39.540 And then on the right hand side it's actually what's going into the machine. 11:39.680 --> 11:41.990 So you're building the machine bit by bit. 11:41.990 --> 11:48.080 So the first thing is you got the operating system working on bias and change the directory to here 11:48.260 --> 11:54.380 to be that working correctly then you're copying a file from your machine to the new machine you're 11:54.380 --> 12:00.080 building then you're running Peppe install on your on the new machine to install these requirements 12:00.080 --> 12:01.190 on the new machine. 12:01.340 --> 12:07.240 And then you're copying all your files your application and the UI onto the new machine. 12:07.300 --> 12:12.790 And so the final thing that we have to do is just to write a command as a command distilling daquiri 12:12.800 --> 12:14.630 to run a command. 12:14.750 --> 12:20.270 And that's basically going to be Python and then Colma and then app duppy away. 12:20.360 --> 12:26.390 So it's telling it to re bison run this command on the new machine python app that way. 12:26.660 --> 12:32.540 So you can think of this docker file over here as we're building a machine with a web application but 12:32.540 --> 12:36.610 we're building it step by step right just like how we did in the start. 12:36.650 --> 12:42.270 The first thing is I taught you how to use the virtual box to download a buntu and Python. 12:42.320 --> 12:44.090 So we had this from year. 12:44.300 --> 12:46.880 And then the next thing we made a new directory right. 12:46.880 --> 12:54.040 We made tutorial one on the desktop and and then we installed some requirements like flask and then. 12:54.080 --> 12:56.780 So this is this one flask and flask restful. 12:57.020 --> 13:00.290 And then we ran that we installed these. 13:00.290 --> 13:08.660 So these two steps here download and install the new flask and flask restful on the system and then 13:08.840 --> 13:16.180 we introduced to up into this virtual box here and then we once we were happy with it we were on Piscean 13:16.210 --> 13:23.150 and up Pusey you can think of this as really a process of building the other system the new the new 13:23.330 --> 13:26.290 computer if you may say from scratch. 13:26.290 --> 13:27.200 Right so that's. 13:27.200 --> 13:32.870 And that gives you a lot of flexibility with what you you want at your environment and what you don't 13:32.870 --> 13:33.720 want in it. 13:33.770 --> 13:41.300 So we say that for now and then for further requirements here we need two things we need a flask. 13:41.770 --> 13:42.290 Right. 13:42.420 --> 13:46.280 Sometimes it gives me problems for the f or f. 13:46.520 --> 13:48.150 So this might throw some years. 13:48.290 --> 13:55.670 And also we are going to with that flask restful or install flasks full rest folk. 13:55.700 --> 14:02.680 So we just add them in two different lines and basically that tells pit install to install flask. 14:02.690 --> 14:04.500 And last question right. 14:04.940 --> 14:06.890 OK so far so good. 14:06.900 --> 14:13.910 Now if we go back to the terminal and then we go so we go one step back and then we do sort of atom 14:13.970 --> 14:16.100 here so we open atom here again. 14:17.880 --> 14:19.170 Now what's happening here. 14:20.150 --> 14:28.130 Now we have two folders we have database which we didn't put anything in and we have again a web a web 14:28.210 --> 14:34.730 all right which has ADD UP WHY WE HAVE A or file the doc or file that explains how to run this whole 14:34.730 --> 14:44.740 system web system or a web module if you may see onto the new machine and then you have amped PUA which 14:44.740 --> 14:50.680 is on the outside right which the one we Capuzzo we don't actually need this one so we can delete it. 14:50.680 --> 14:50.960 Right. 14:50.960 --> 14:52.630 Move into the trash. 14:52.630 --> 15:00.070 Now what we're going to do is we want to have some way to automatically start this web application right 15:00.070 --> 15:00.610 away. 15:00.620 --> 15:04.360 Right so we want some way to be able to run it right away. 15:04.540 --> 15:09.840 So what we're going to do is we're going to be at the top level. 15:09.850 --> 15:17.020 So for here we have D.B in web and then I'm going to make a new file which is called docker and it has 15:17.020 --> 15:22.550 to be exactly this like this Dharker compose that YAML. 15:23.050 --> 15:29.240 OK so Dr. Dash compose dot why and how and it's pronounced YAML. 15:29.590 --> 15:33.940 So I click enter and again pseudo-ID you forgetting that. 15:34.090 --> 15:41.870 And so if we go back to our atom here and see this Adam over here. 15:42.050 --> 15:50.240 And so now we're going to be able to be writing here is a new or compose YAML file that basically contains 15:50.300 --> 15:57.200 all these containers so you can think of it as we have so many images here right web database web to 15:57.230 --> 16:02.960 maybe maybe have two web applications running at the same time and you will one file to control all 16:02.960 --> 16:07.910 of these to control the communication between them to control what ports they're running on to control 16:07.910 --> 16:09.260 everything about them. 16:09.290 --> 16:13.690 And so the first thing is we're going to write a version and then three. 16:13.700 --> 16:14.120 Right. 16:14.210 --> 16:15.910 So we're using version 3. 16:15.920 --> 16:21.650 There are many versions of blogger compose each have different syntax but the latest one is version 16:21.650 --> 16:24.780 3 so we're going to be using version 3. 16:24.830 --> 16:29.480 And then we're going to write services and then enter. 16:29.960 --> 16:32.140 And then the first service is wed. 16:32.180 --> 16:32.500 Right. 16:32.510 --> 16:35.280 We're building the first one which is web. 16:36.080 --> 16:40.490 And then we're going to tell Dr. Campos to build it from. 16:40.490 --> 16:46.980 So I'm going to tell build from this current directory then Web. 16:47.300 --> 16:54.860 So I'm basically telling this what I'm doing here is I'm saying when is a service and you can build 16:54.860 --> 16:58.150 this service so you can build this web. 16:58.240 --> 17:00.050 So let's go from the backwards. 17:00.170 --> 17:07.100 You can build the web service from the they're actually at dot slash web. 17:07.100 --> 17:09.420 So this is where the docker file is. 17:09.410 --> 17:17.060 So at this location you must have a docker file so set so that this doctor compose would know how to 17:17.060 --> 17:18.700 build this module right. 17:18.770 --> 17:24.450 Because the doc or I remember the doc file is what tells the doctor or doc or compose how to build the 17:24.450 --> 17:26.750 entire computer from scratch right. 17:26.820 --> 17:28.990 And so this is basically selling it. 17:29.030 --> 17:33.170 Hey I have a web not you and you can build it from this app from this. 17:33.180 --> 17:34.260 They're actually over here. 17:34.340 --> 17:37.300 So a not so great directory slash web. 17:37.460 --> 17:38.220 OK. 17:38.630 --> 17:43.430 And then I'm also going to tell it I have sports I want to open some boards. 17:43.760 --> 17:50.120 And then the first port is 5000 whoops and that's 5000. 17:50.330 --> 17:53.040 And then I want to match it to 5000. 17:53.330 --> 17:53.870 OK. 17:53.990 --> 17:59.800 So I want I mean if you remember we talked about ports before and it's basically matching five seconds 17:59.810 --> 18:01.930 so I think this should be here. 18:02.070 --> 18:02.500 Yes. 18:02.720 --> 18:04.640 So five thousand to five. 18:06.500 --> 18:07.220 OK. 18:08.380 --> 18:10.840 Now once we're done with that then we're done. 18:10.850 --> 18:13.900 Now let's say we add database which is another one. 18:13.910 --> 18:15.110 So we add data. 18:15.140 --> 18:22.730 So another service would be D.B and then I would say build you can build it from that slash D.B and 18:22.730 --> 18:27.980 then D-B should also have a docker file inside of it that tells you how to build this database from 18:27.980 --> 18:28.980 scratch right. 18:29.030 --> 18:35.540 So you can think hey that this daquiri composed YAML file it might have it you might even have to write 18:35.800 --> 18:42.020 and then this would have build and then you can build it from Web to write as though you can have multiple 18:42.020 --> 18:47.900 services and all of them can communicate with each other very easily using Bocker composer. 18:47.900 --> 18:56.510 That's why Dr. kapos is very simple because instead of just dealing with one docker or container image 18:56.570 --> 19:02.420 at a time you can just communicate with all of them using block or compose so that's super useful. 19:02.750 --> 19:05.350 So for now we don't have anything for a database or web. 19:05.360 --> 19:08.260 Those are we going to delete it and leave it as it does. 19:09.330 --> 19:12.420 Now we're going to save that and that's about it. 19:12.420 --> 19:19.590 If we want to run this system so you just save this and then we're going to go back a year and we're 19:19.590 --> 19:27.290 going to have the first we're going to first ride pseudo darker compose build. 19:27.390 --> 19:30.140 So we want to build the entire system first. 19:32.690 --> 19:33.770 So we have an air 19:39.480 --> 19:43.650 OK so I think the problem here is this this space over here. 19:43.670 --> 19:50.150 So you need to have a space between the command and because when you're you notice when you have it 19:50.150 --> 19:54.390 here you stuck to version and so version wasn't considered right. 19:54.410 --> 19:59.520 So you just have to put a space here and hopefully once you do that then that should hopefully work 19:59.520 --> 19:59.810 great. 19:59.810 --> 20:04.450 There shouldn't be any problems and then you go out and you do soon to build. 20:04.520 --> 20:08.520 And so I was going to tell you that it's building weap right. 20:08.690 --> 20:11.530 So is for us going to pull from by then. 20:11.540 --> 20:12.050 Right. 20:12.140 --> 20:14.640 And it's basically pulling from where. 20:14.660 --> 20:21.290 Well it's pulling from voc rehab like we discussed and so I was going to download it and do it. 20:21.290 --> 20:24.750 So that's step one out of six so I'll come back once this is done. 20:27.230 --> 20:34.010 So you'll notice here that the first step is done and we have downloaded basically by in theory and 20:34.220 --> 20:40.080 the operating system and then they start step two which is to make the work directory as last users 20:40.100 --> 20:45.220 last slash Flash app and then the steps three is to copy the requirements that Daggs. 20:45.220 --> 20:48.580 Step four is as we said to run install. 20:48.590 --> 20:52.460 And so now it's going to be installing flask and flask restful. 20:52.550 --> 20:53.390 OK. 20:53.680 --> 20:55.620 And so now it's downloading. 20:55.790 --> 21:03.060 And if you notice here that we downloaded everything we've copied and now we're running BIOS and amped 21:03.080 --> 21:03.920 up the way. 21:04.100 --> 21:09.830 OK so now that we've done this and we've built the system successfully then now if you want to run this 21:09.830 --> 21:18.960 system then we would go to and write pseudo doctor compose compose and then the last time we rode to 21:19.100 --> 21:20.790 dock or compose build. 21:20.930 --> 21:28.640 But this time round your eyes Sudhakar combos up and so click this and then we write the password to 21:28.650 --> 21:29.730 here. 21:30.200 --> 21:31.010 OK. 21:32.310 --> 21:39.300 And so now you will see what it's doing is it tells you we're creating the network to Turo one default 21:39.470 --> 21:41.650 was that was the default driver. 21:41.730 --> 21:44.630 And it's attaching the instance to it. 21:44.690 --> 21:50.750 And it's saying environment is production and this is where we're going to talk about this later. 21:50.760 --> 21:55.890 But it's basically saying that your server is now running it went to seven point zero point zero point 21:55.890 --> 21:56.940 one. 21:57.090 --> 21:58.810 I found it and so whoops. 21:58.830 --> 22:02.810 So we've accidentally clicked Control-C to close this off. 22:02.810 --> 22:05.160 Close the the server. 22:05.190 --> 22:07.030 But if I rerun it again. 22:07.080 --> 22:08.910 So let's try to rerun it again. 22:09.950 --> 22:13.740 And OK so it's running now and you would notice here that it's running in the site. 22:13.750 --> 22:23.530 So if we go here and we click on the year and then we go control the so we can tell you that the connection 22:23.530 --> 22:24.970 was reset. 22:25.000 --> 22:26.140 So yes. 22:26.500 --> 22:30.970 So OK so I found the error. 22:30.980 --> 22:36.770 So in this year if you remember when were running that application that we need now in this case we 22:36.770 --> 22:42.710 need to specify that the local that the host to run this application should be the local host. 22:42.710 --> 22:43.180 Right. 22:43.310 --> 22:49.130 So we should run this on the local because if you see here in the previous ones we were running on one 22:49.130 --> 22:51.070 to seven point zero point zero point one. 22:51.070 --> 22:54.450 But this is the local host of the machine itself right. 22:54.620 --> 23:01.080 So what we need to do is to to change those so that it's actually an ad. 23:02.140 --> 23:06.270 If you notice here it says it's running on zero point zero point zero point zero. 23:06.380 --> 23:12.540 So the only thing we're going to do differently is to go back and to run the host add host equals zero 23:12.540 --> 23:14.560 point zero point zero point zero. 23:15.110 --> 23:23.220 Now if we open up post man and we go and we try to do some sort operations are you going to do local 23:23.310 --> 23:30.250 host OK 5000 slash ad and then let's change that. 23:30.250 --> 23:34.350 For example to try to maybe zoomin. 23:34.820 --> 23:36.060 Are you seeing this. 23:36.280 --> 23:41.570 OK so so let's try to make X as for right. 23:41.780 --> 23:43.170 And why is 5. 23:43.190 --> 23:46.010 And then we want it whoops we want to save that. 23:46.340 --> 23:52.280 And so we can send this this information and then we should get their response back. 23:52.280 --> 23:58.240 So if we go here and we see the bodies let's see how we can make it even smaller now. 23:58.370 --> 24:01.570 So the result is status code is 200. 24:01.790 --> 24:05.060 And the message is nine so four plus five is nine. 24:05.360 --> 24:11.500 So if you do that instead as divide right or it was it division I think. 24:11.840 --> 24:20.260 So we closed that and we said and then we get a 200 0.8 so for divided by five is your appointed. 24:20.600 --> 24:21.840 So you get the idea. 24:21.840 --> 24:29.390 So basically what we've done here is we've reduced the system to one dog or file which is controlling 24:29.570 --> 24:31.380 all of the containers. 24:31.520 --> 24:40.340 And then this container here contains only one web application and IPY and this adds up to why is running 24:40.340 --> 24:45.200 inside a container that is specified by this Dharker file over here. 24:45.260 --> 24:46.860 So this Dharker file is. 24:46.910 --> 24:53.990 You can think of it as a separate computer or a separate server and it running in a buntu machine with 24:53.990 --> 25:01.990 Python and it has all the requirements flask and flask restful and it's running at the Y at all times. 25:02.120 --> 25:04.070 And so it's trying the web server. 25:04.280 --> 25:06.260 And this is a requirement that text. 25:06.410 --> 25:10.080 And so now we have a system where what if we want to do it. 25:10.110 --> 25:17.090 So let's say for example I want I come here and I want to do is change yours or let's say I want to 25:17.090 --> 25:21.180 do this is message one right or do something so I can say that. 25:21.320 --> 25:25.670 And then once on I want to test my code I just Control-C eat. 25:25.670 --> 25:34.040 So I stalk my daughter compose and then I rerun Sudhakar compose up race only you don't need to do to 25:34.040 --> 25:39.980 do a rebuild unless you change something in the file address and you add a new file or you change one 25:39.980 --> 25:42.930 of the darker files then you need to run build again. 25:43.040 --> 25:45.050 But if you only if you don't need to. 25:45.050 --> 25:50.620 You can just do Sudhakar combos up and so it runs your server right away. 25:50.630 --> 25:57.920 So this is very very very quickly in that we can you know work do our code here do our changes and then 25:57.920 --> 26:04.130 just run the server and voila all the systems are running all the databases everything is running and 26:04.130 --> 26:05.810 we can test the code right away. 26:05.810 --> 26:07.500 So this is super helpful. 26:07.550 --> 26:14.390 For now it just seems like you know I might hear someone saying Oh we can just use you know Python flask 26:14.390 --> 26:18.670 or or or just from the terminal on say Dyson laptop you why does this. 26:18.670 --> 26:19.430 Answer that. 26:19.550 --> 26:25.480 But later on we're going to add a mongo TB database and we're going to add more stuff. 26:25.480 --> 26:29.190 So you're going to want to have some way to control all these systems. 26:29.300 --> 26:36.160 And the best way to do this is Dr. Campos so you can with only one one command you can raise all the 26:36.400 --> 26:37.390 system up. 26:37.760 --> 26:39.320 So hopefully that makes sense. 26:39.320 --> 26:41.990 We haven't done any Lots of changes. 26:41.990 --> 26:44.650 In fact we only wrote this or file. 26:44.720 --> 26:52.400 Dr. gumbos and we only installed darker and darker compose on the system so nothing too major right. 26:52.400 --> 26:57.270 We've only added like these are the two major files that we've added and we've done some re ordering 26:57.270 --> 26:58.650 in the structure of the code. 26:58.650 --> 27:01.760 Right so it's now D-B weapons stuff like that. 27:02.070 --> 27:02.530 So yeah. 27:02.540 --> 27:05.420 Thanks for watching and I'll see you in the next video.