1 00:00:02,110 --> 00:00:05,550 So over the last lectures we installed Docker, 2 00:00:05,550 --> 00:00:07,850 and I find it important to understand 3 00:00:07,850 --> 00:00:09,880 what exactly we installed there 4 00:00:09,880 --> 00:00:12,870 and what we do with these tools. 5 00:00:12,870 --> 00:00:15,860 In the end, we installed the Docker Engine. 6 00:00:15,860 --> 00:00:16,880 We installed that, 7 00:00:16,880 --> 00:00:19,670 no matter if you installed Docker Desktop, 8 00:00:19,670 --> 00:00:21,970 if you installed it directly on Linux, 9 00:00:21,970 --> 00:00:24,730 or if you used the Docker toolbox. 10 00:00:24,730 --> 00:00:27,880 There this Docker Engine was simply set up 11 00:00:27,880 --> 00:00:31,020 in that virtual machine, which hosts Linux, 12 00:00:31,020 --> 00:00:34,280 which is simply required to run Docker. 13 00:00:34,280 --> 00:00:35,730 The virtual machine by the way, 14 00:00:35,730 --> 00:00:37,070 just to make this clear, 15 00:00:37,070 --> 00:00:39,790 is really only there because your operating system 16 00:00:39,790 --> 00:00:42,220 doesn't natively support Docker. 17 00:00:42,220 --> 00:00:44,820 If it would, we wouldn't need the virtual machine, 18 00:00:44,820 --> 00:00:47,900 because the idea was to not use virtual machines. 19 00:00:47,900 --> 00:00:50,860 But even with that, it's just there to run Docker 20 00:00:50,860 --> 00:00:53,790 and then your containers will run in that virtual machine. 21 00:00:53,790 --> 00:00:56,550 So we still will be working with containers. 22 00:00:56,550 --> 00:00:59,450 Anyways, we installed the Docker Engine in the end. 23 00:00:59,450 --> 00:01:02,750 Docker Desktop installed it for us and made sure it works. 24 00:01:02,750 --> 00:01:04,959 Docker Toolbox installed it for us. 25 00:01:04,959 --> 00:01:07,340 And on Linux, we installed it just like that. 26 00:01:07,340 --> 00:01:09,000 They are for Docker Desktop, 27 00:01:09,000 --> 00:01:11,270 the tool which some of you at least installed 28 00:01:11,270 --> 00:01:14,520 over the last lectures, is really just a tool that made sure 29 00:01:14,520 --> 00:01:18,110 the Docker Engine was installed and that it works. 30 00:01:18,110 --> 00:01:21,370 It includes a so-called Daemon, a process which keeps 31 00:01:21,370 --> 00:01:23,820 on running and ensures that Docker works. 32 00:01:23,820 --> 00:01:26,320 So to say, the heart of Docker, 33 00:01:26,320 --> 00:01:29,080 and it contains a command line interface. 34 00:01:29,080 --> 00:01:31,700 And you also got that with Docker Toolbox. 35 00:01:31,700 --> 00:01:34,900 And if you just installed Docker on Linux. 36 00:01:34,900 --> 00:01:38,120 The command line interface will play a crucial role, 37 00:01:38,120 --> 00:01:40,550 because that is the tool we will use 38 00:01:40,550 --> 00:01:43,400 throughout this entire course to run commands, 39 00:01:43,400 --> 00:01:47,550 to create images and containers, and to work with Docker. 40 00:01:47,550 --> 00:01:50,600 So we got all of that installed by now. 41 00:01:50,600 --> 00:01:51,550 Throughout this course, 42 00:01:51,550 --> 00:01:54,570 you will also learn about a service called Docker Hub, 43 00:01:54,570 --> 00:01:56,300 which I want to mention right away. 44 00:01:56,300 --> 00:01:57,920 We're not using it right now. 45 00:01:57,920 --> 00:02:00,690 We also don't need to install anything for that, 46 00:02:00,690 --> 00:02:02,330 but that will be a service which 47 00:02:02,330 --> 00:02:06,200 will allow us to host our images in the cloud, in the web, 48 00:02:06,200 --> 00:02:07,970 so that we can easily share them 49 00:02:07,970 --> 00:02:11,880 with our systems or with our people. 50 00:02:11,880 --> 00:02:13,220 And we will also learn 51 00:02:13,220 --> 00:02:15,790 about a tool called Docker Compose later, 52 00:02:15,790 --> 00:02:19,740 in a standalone section, labeled Docker Compose. 53 00:02:19,740 --> 00:02:22,720 This is a tool which kind of builds up on Docker, 54 00:02:22,720 --> 00:02:23,570 you could say. 55 00:02:23,570 --> 00:02:26,910 Which makes managing more complex containers 56 00:02:26,910 --> 00:02:30,050 or multi-container projects easier. 57 00:02:30,050 --> 00:02:31,150 Last but not least, 58 00:02:31,150 --> 00:02:33,470 this course is all about Kubernetes 59 00:02:33,470 --> 00:02:35,860 and they offer just another tool, 60 00:02:35,860 --> 00:02:37,260 if you want to call it like this, 61 00:02:37,260 --> 00:02:39,190 we're going to explore later. 62 00:02:39,190 --> 00:02:40,450 It will also help us 63 00:02:40,450 --> 00:02:43,430 with managing complex containerized 64 00:02:43,430 --> 00:02:46,220 applications when we want to deploy them, 65 00:02:46,220 --> 00:02:49,800 but we will learn more about that when the time is right. 66 00:02:49,800 --> 00:02:51,610 So that's what we installed. 67 00:02:51,610 --> 00:02:54,320 And some tools you should be aware of. 68 00:02:54,320 --> 00:02:57,830 And with that, let's now use the Docker tool we installed, 69 00:02:57,830 --> 00:02:59,710 to get our hands dirty 70 00:02:59,710 --> 00:03:02,853 and create and run our first real container.