WEBVTT 00:01.020 --> 00:04.020 -: In the last section, we put together our default.com file, 00:04.020 --> 00:05.730 and now we're going to put together a docker 00:05.730 --> 00:09.390 file that will create a new custom Nginx image 00:09.390 --> 00:12.210 and attempt to apply this configuration file to it. 00:12.210 --> 00:14.040 Now, if that sounds hard, let me assure you, 00:14.040 --> 00:17.700 it's gonna be way easier than you ever might guess. 00:17.700 --> 00:19.710 Let's first begin by pulling up Docker hub. 00:19.710 --> 00:20.940 And I wanna very quickly look 00:20.940 --> 00:22.740 up the Nginx image, 00:22.740 --> 00:25.470 that we can download automatically from Docker hub. 00:25.470 --> 00:28.320 So, I'll go to hub.docker.com. 00:28.320 --> 00:30.270 I'll go to the explore tab up top, 00:30.270 --> 00:32.070 and then, as the very first results, 00:32.070 --> 00:34.470 or hopefully it'll be one of the first ones for you, 00:34.470 --> 00:37.980 sometimes it kind of argues with Alpine for top spot, 00:37.980 --> 00:39.243 I'll look at Nginx. 00:40.740 --> 00:42.810 So, we'll look at the full description here. 00:42.810 --> 00:46.440 As usual, you'll notice there's a bunch of links for help, 00:46.440 --> 00:48.633 and you can look down here, 00:50.340 --> 00:52.770 and eventually you're gonna see somewhere inside of here, 00:52.770 --> 00:53.610 uh right here. 00:53.610 --> 00:56.310 Here is a great example right here. 00:56.310 --> 00:59.490 So, in order to do any customization of Nginx, 00:59.490 --> 01:01.980 essentially all we have to do is build a docker file 01:01.980 --> 01:02.813 that says, 01:02.813 --> 01:05.490 we wanna make a image from Nginx, 01:05.490 --> 01:08.010 and then we're gonna take our configuration file 01:08.010 --> 01:10.770 and copy it into the temporary container, 01:10.770 --> 01:12.630 or essentially the image. 01:12.630 --> 01:15.960 All the configuration for Nginx is done by these files 01:15.960 --> 01:18.270 or these configuration files that simply exist 01:18.270 --> 01:19.410 on the hard drive. 01:19.410 --> 01:20.850 So, as long as we, or excuse me, not the hard drive, 01:20.850 --> 01:22.860 but you understand the file system. 01:22.860 --> 01:25.440 So, as long as we copy that configuration file 01:25.440 --> 01:29.010 into our image, it'll be automatically applied to Nginx. 01:29.010 --> 01:32.190 once a container starts up out of our custom image. 01:32.190 --> 01:33.990 Essentially, what you see right here, 01:33.990 --> 01:37.053 is all we really have to do inside of our docker file. 01:37.980 --> 01:38.813 Remember that, 01:38.813 --> 01:40.950 if we do not replace the default command 01:40.950 --> 01:43.530 of a image inside of the docker file 01:43.530 --> 01:46.200 then the default command of the parent image, 01:46.200 --> 01:48.210 which is from Nginx right here. 01:48.210 --> 01:50.103 will automatically take precedence. 01:51.180 --> 01:53.280 Okay, so let's get to it. 01:53.280 --> 01:55.800 I'm going to flip back over to my code editor 01:55.800 --> 01:57.690 inside the Nginx folder. 01:57.690 --> 02:02.610 I'll make a new file called Dockerfile.dev, and then inside 02:02.610 --> 02:06.443 of here I'll set up the base image with from Nginx. 02:07.830 --> 02:11.370 And then we're going to copy the default.conf file 02:11.370 --> 02:14.340 into the file system of this image. 02:14.340 --> 02:18.540 So I'll say copy default.conf, and technically we should do 02:18.540 --> 02:20.313 on a relative path like so. 02:22.141 --> 02:23.880 And then the folder that we're going to copy it 02:23.880 --> 02:26.860 over to is, /etc 02:28.140 --> 02:31.320 Nginx conf.d. 02:31.320 --> 02:33.300 Now, in every other case we've ever made use 02:33.300 --> 02:35.910 of this copy command, we've been copying files 02:35.910 --> 02:37.440 into a directory. 02:37.440 --> 02:42.000 We can actually specify the exact file name to copy our file 02:42.000 --> 02:44.940 into. And if that file already exists inside the image 02:44.940 --> 02:46.650 then it will be overwritten. 02:46.650 --> 02:50.160 So there is a default.conf file that is included with 02:50.160 --> 02:51.690 Nginx by default. 02:51.690 --> 02:55.500 So by putting on default.conf right here, we're saying very 02:55.500 --> 02:58.470 clearly yes, take my file and overwrite the 02:58.470 --> 03:01.590 Existing one, just overwrite what is ever is there. 03:01.590 --> 03:04.213 And that's exactly what we want to do in this case. 03:04.213 --> 03:06.810 We want to overwrite that default file. 03:06.810 --> 03:08.983 All right, so that's pretty much it. 03:08.983 --> 03:10.140 I'm gonna save this, 03:10.140 --> 03:12.600 And now the last thing we have to do is add this 03:12.600 --> 03:16.830 Nginx as a service word docker compose file. 03:16.830 --> 03:19.560 So I'm gonna open up Docker compose file 03:19.560 --> 03:22.560 and we'll add in a new Nginx service to this thing. 03:22.560 --> 03:23.490 Now I'm just gonna add it 03:23.490 --> 03:25.290 towards the top here just cause I'm lazy. 03:25.290 --> 03:27.390 It doesn't really matter where you add it. 03:29.100 --> 03:31.713 Okay, so the new service will be called Nginx. 03:33.204 --> 03:35.310 We could just as easily have called this like our router 03:35.310 --> 03:38.670 or our proxy or whatever you want to call it. 03:38.670 --> 03:41.010 In this case, I'll just call it Nginx just 03:41.010 --> 03:43.215 because I don't really have a better name 03:43.215 --> 03:44.580 off top of my head. 03:44.580 --> 03:46.020 Now this is definitely a service 03:46.020 --> 03:48.570 so we want to make sure is always running ahead 03:48.570 --> 03:51.150 a hundred percent of the time no matter what. 03:51.150 --> 03:53.610 And so I am gonna use that restart policy that we spoke 03:53.610 --> 03:55.380 about a while ago on here. 03:55.380 --> 03:57.090 So I'm gonna re say restart. 03:57.090 --> 03:59.580 Always like so, because no matter what 03:59.580 --> 04:02.910 I always want to make sure Nginx is ready to go 04:02.910 --> 04:07.440 if the API crashes or if my say worker crashes. 04:07.440 --> 04:09.120 If the worker crashes in particular 04:09.120 --> 04:11.250 I'm definitely okay with this thing just crashing 04:11.250 --> 04:13.830 out and burning and staying off. 04:13.830 --> 04:16.200 Cause remember the worker is doing the processing 04:16.200 --> 04:19.440 for our actual fibonacci value 04:19.440 --> 04:21.900 and that is kind of a expensive computation. 04:21.900 --> 04:23.940 And so if the worker is misbehaving in some way 04:23.940 --> 04:26.190 I kind of am okay with it just crashing 04:26.190 --> 04:28.530 and staying off because I wouldn't want it to 04:28.530 --> 04:31.890 be accidentally consuming a ton of CPU cycles. 04:31.890 --> 04:33.690 But in the case of Nginx 04:33.690 --> 04:37.260 this thing is routing traffic to our entire application. 04:37.260 --> 04:40.083 And so no matter what, I gotta have Nginx running. 04:41.220 --> 04:44.010 So then inside of here we'll also specify a build cause 04:44.010 --> 04:45.810 we have a custom version of Nginx that 04:45.810 --> 04:47.490 we're putting together. 04:47.490 --> 04:51.780 So I'll specify its Docker file as docker file.dev 04:51.780 --> 04:55.683 and I'll set up its context as the Nginx directory. 04:57.030 --> 04:59.100 And then finally, unlike a lot of the other 04:59.100 --> 05:00.690 things we put together inside of here 05:00.690 --> 05:03.120 this will have a port mapping. 05:03.120 --> 05:07.740 So I'm gonna say ports and I want to map, how about port? 05:07.740 --> 05:11.940 I don't know, 30 50 on my local machine should be mapped 05:11.940 --> 05:14.430 up to port 80 inside the container. 05:14.430 --> 05:15.840 So remember you and I 05:15.840 --> 05:17.850 once we start up Docker compose, we're going to 05:17.850 --> 05:20.940 be accessing this port right here on local host. 05:20.940 --> 05:23.239 And so if you want something else here 05:23.239 --> 05:25.590 you could do, you know, 4,000, 3,000, whatever it might be. 05:25.590 --> 05:26.490 Totally up to you. 05:28.470 --> 05:30.690 All right, so I think that's just about it. 05:30.690 --> 05:32.010 Let's take another pause right here. 05:32.010 --> 05:33.480 Make sure you save this file 05:33.480 --> 05:36.496 and then we'll test everything out in the next section. 05:36.496 --> 05:37.883 So I'll see you in just a minute.