WEBVTT 00:00.900 --> 00:02.280 -: In the last section, we wrote out all 00:02.280 --> 00:05.310 of our application code for the node JS server. 00:05.310 --> 00:08.040 Now that we've got all that stuff put together, 00:08.040 --> 00:10.200 we're going to put together a little docker file 00:10.200 --> 00:12.210 that's gonna be basically identical 00:12.210 --> 00:14.700 to the one that we had put together previously. 00:14.700 --> 00:17.160 This docker file's sole purpose is going to be 00:17.160 --> 00:19.830 to put together this node application. 00:19.830 --> 00:21.900 And so essentially, it's representing this side 00:21.900 --> 00:23.220 of the equation. 00:23.220 --> 00:26.310 This docker file is gonna have nothing to do whatsoever 00:26.310 --> 00:27.450 with our Redis server, 00:27.450 --> 00:30.720 so it's solely concerned with the node app for now. 00:30.720 --> 00:32.430 So let's get started on this. 00:32.430 --> 00:34.110 Inside of my code editor, 00:34.110 --> 00:35.730 I'll find my visits folder. 00:35.730 --> 00:38.433 Inside there I'll make a docker file. 00:39.630 --> 00:40.463 Then inside of here, 00:40.463 --> 00:42.960 we're gonna again see some code that's very identical 00:42.960 --> 00:46.080 to what we put together on our last application. 00:46.080 --> 00:50.973 We'll first specify our base image as node alpine. 00:52.410 --> 00:54.483 We'll then set up a working directory. 00:55.800 --> 00:58.560 We'll again, use app as a working directory. 00:58.560 --> 01:00.900 And then remember, we're gonna use a little strategy 01:00.900 --> 01:04.620 to make sure that we only try to rebuild the image anytime 01:04.620 --> 01:07.140 that we change the package dot JSON file, 01:07.140 --> 01:08.850 and we won't reveal the image 01:08.850 --> 01:10.740 if we make any changes to the source code, 01:10.740 --> 01:13.230 like in the index dot JS file. 01:13.230 --> 01:14.580 To make sure that's the case, 01:14.580 --> 01:16.230 we're going to first copy over 01:16.230 --> 01:19.021 only the package dot JSON file. 01:19.021 --> 01:21.930 We'll then run and PM install to get all 01:21.930 --> 01:23.880 of our different dependencies, 01:23.880 --> 01:26.820 and then we'll copy over all of the rest of our source code 01:26.820 --> 01:29.103 with copy dot dot. 01:30.030 --> 01:31.950 And then finally, we'll start up our server 01:31.950 --> 01:36.723 with CMD NPM start, like so. 01:38.880 --> 01:40.680 Okay, so again, basically the same thing 01:40.680 --> 01:42.660 as what we wrote previously. 01:42.660 --> 01:44.190 Let's now flip over to our terminal 01:44.190 --> 01:48.090 and try building a image out of this docker file. 01:48.090 --> 01:49.950 So I'll go back over to my terminal. 01:49.950 --> 01:52.380 I'm gonna make sure I'm inside of my visits directory, 01:52.380 --> 01:55.143 and I'll run docker build dot. 01:56.580 --> 01:59.310 We're then gonna see the familiar steps. 01:59.310 --> 02:00.870 You might see that red text again, 02:00.870 --> 02:03.450 something that says notice right there. 02:03.450 --> 02:04.800 And you might see the three warnings. 02:04.800 --> 02:05.790 Those are totally fine. 02:05.790 --> 02:08.280 You can completely ignore those. 02:08.280 --> 02:09.540 So then down here at the bottom, 02:09.540 --> 02:13.080 we see the ID of the image that was created. 02:13.080 --> 02:15.990 Now chances are we might not be making a tremendous number 02:15.990 --> 02:17.790 of changes to this image. 02:17.790 --> 02:18.900 So I think we should go ahead 02:18.900 --> 02:21.240 and just tag this image with a name right now, 02:21.240 --> 02:22.770 or give it some name, 02:22.770 --> 02:24.600 so that we don't have to keep carrying around 02:24.600 --> 02:26.460 this ID all the time. 02:26.460 --> 02:29.280 So let's rerun that docker build command, 02:29.280 --> 02:31.080 but rather than putting a dot right at the end, 02:31.080 --> 02:32.670 we'll say docker build, 02:32.670 --> 02:35.013 and then we will dash T to tag it. 02:36.210 --> 02:37.983 And I'll put in my name, 02:38.940 --> 02:41.910 or my docker username that is, 02:41.910 --> 02:46.080 slash the name of our project, which is visits, 02:46.080 --> 02:47.490 and then I'll put a tag on it 02:47.490 --> 02:51.420 by indicating the little colon with latest. 02:51.420 --> 02:53.640 And then after that, I'll put the period to indicate 02:53.640 --> 02:56.140 that we want to build outta the current directory. 02:57.720 --> 02:58.800 All right, so there we go. 02:58.800 --> 02:59.633 That's it. 02:59.633 --> 03:03.060 We've now got our tagged docker image. 03:03.060 --> 03:04.440 So let's take a quick break right here. 03:04.440 --> 03:05.700 And we'll come back the next section, 03:05.700 --> 03:06.960 and we'll start getting a better sense 03:06.960 --> 03:09.390 of how to get this thing to work along together 03:09.390 --> 03:11.740 with a separate container that's running Redis.