1 00:00:02,429 --> 00:00:03,980 This is Docker Compose 2 00:00:03,980 --> 00:00:06,560 and the docker-compose.yaml file. 3 00:00:06,560 --> 00:00:08,870 Now I did mention this complete reference 4 00:00:08,870 --> 00:00:10,760 with all the potential options, 5 00:00:10,760 --> 00:00:14,580 but it showed you all important options in this module. 6 00:00:14,580 --> 00:00:17,130 So all the options you will use all the time, 7 00:00:17,130 --> 00:00:19,660 I covered them in this module. 8 00:00:19,660 --> 00:00:21,010 Now with Docker Compose, 9 00:00:21,010 --> 00:00:23,950 it's super easy to build complex projects 10 00:00:23,950 --> 00:00:26,070 consisting of multiple containers 11 00:00:26,070 --> 00:00:28,840 that should be able to interact with each other. 12 00:00:28,840 --> 00:00:30,710 You can also use Docker Compose 13 00:00:30,710 --> 00:00:33,080 if you have just one container, though. 14 00:00:33,080 --> 00:00:36,380 For example, because you like the simplicity 15 00:00:36,380 --> 00:00:38,350 of specifying bind mounts, 16 00:00:38,350 --> 00:00:42,570 not having to use this long path, that is an advantage. 17 00:00:42,570 --> 00:00:44,920 And, even if it's not the bind mount, 18 00:00:44,920 --> 00:00:47,310 having one conflict file where you 19 00:00:47,310 --> 00:00:50,820 can conveniently tweak your container configuration 20 00:00:50,820 --> 00:00:54,910 might be more convenient than having to type long commands 21 00:00:54,910 --> 00:00:56,863 into command prompt or terminal. 22 00:00:57,970 --> 00:01:01,070 That's why Docker Compose is also often used 23 00:01:01,070 --> 00:01:03,260 for single container setups 24 00:01:03,260 --> 00:01:06,820 because you can specify your launch configuration 25 00:01:06,820 --> 00:01:08,930 in such a configuration file, 26 00:01:08,930 --> 00:01:11,730 which is simply easier to maintain and manage 27 00:01:11,730 --> 00:01:13,850 than commands like this. 28 00:01:13,850 --> 00:01:17,070 So Docker Compose is a tool that we'll now see 29 00:01:17,070 --> 00:01:20,800 for the rest of this course because it is so powerful. 30 00:01:20,800 --> 00:01:23,830 But I also want you to understand and keep in mind 31 00:01:23,830 --> 00:01:27,610 that Docker Compose does not replace Docker files. 32 00:01:27,610 --> 00:01:29,680 Instead, it works together with them 33 00:01:29,680 --> 00:01:32,620 with this build option and that it also 34 00:01:32,620 --> 00:01:36,900 only partially replaces docker run and docker build. 35 00:01:36,900 --> 00:01:39,910 Yes, you don't execute these commands anymore, 36 00:01:39,910 --> 00:01:40,900 but under the hood, 37 00:01:40,900 --> 00:01:43,960 they are of course executed by Docker Compose. 38 00:01:43,960 --> 00:01:45,960 So it's not a brand new tool. 39 00:01:45,960 --> 00:01:48,780 It's still part of the Docker ecosystem. 40 00:01:48,780 --> 00:01:50,870 It just makes working with Docker 41 00:01:50,870 --> 00:01:54,643 and complex Docker container configurations easier. 42 00:01:55,540 --> 00:01:57,120 In addition, you can, of course, 43 00:01:57,120 --> 00:01:59,670 still use other Docker commands. 44 00:01:59,670 --> 00:02:03,020 For example, you can still list all volumes 45 00:02:03,020 --> 00:02:05,800 with docker volume ls if you wanna do that, 46 00:02:05,800 --> 00:02:08,420 and here you will also see all the volumes 47 00:02:08,420 --> 00:02:11,260 that were created by Docker Compose. 48 00:02:11,260 --> 00:02:14,030 All the anonymous volumes, all the named volumes, 49 00:02:14,030 --> 00:02:16,033 you can see all of that here. 50 00:02:17,380 --> 00:02:19,480 It's not an either/or decision. 51 00:02:19,480 --> 00:02:22,720 It's really just an extra tool in your tool belt, 52 00:02:22,720 --> 00:02:25,680 which can make working with complex applications 53 00:02:25,680 --> 00:02:27,523 and project setups easier.