1 00:00:02,330 --> 00:00:05,760 So these are the core Docker and container concepts. 2 00:00:05,760 --> 00:00:08,010 And now we got two main areas 3 00:00:08,010 --> 00:00:09,820 where we can use these concepts, 4 00:00:09,820 --> 00:00:13,040 locally on our local machine for development 5 00:00:13,040 --> 00:00:15,210 and for having reproducible 6 00:00:15,210 --> 00:00:17,900 and isolated development environments 7 00:00:17,900 --> 00:00:20,570 and on remote hosts, remote machines, 8 00:00:20,570 --> 00:00:24,000 so when we wanna deploy an application with Docker. 9 00:00:24,000 --> 00:00:27,450 Now on our local host, so on our local system 10 00:00:27,450 --> 00:00:31,190 Docker is amazing because we have isolated, encapsulated, 11 00:00:31,190 --> 00:00:33,930 reproducible development environments 12 00:00:33,930 --> 00:00:36,970 which won't clash with any other environments 13 00:00:36,970 --> 00:00:38,670 we might have on our system 14 00:00:38,670 --> 00:00:41,490 where we don't have any cross dependencies 15 00:00:41,490 --> 00:00:44,630 and where therefore development on our local machine 16 00:00:44,630 --> 00:00:47,640 becomes very convenient and easy to manage. 17 00:00:47,640 --> 00:00:52,270 Hence even if you never deploy, your Dockerized applications 18 00:00:52,270 --> 00:00:54,630 Docker is still an amazing tool. 19 00:00:54,630 --> 00:00:56,710 And there are many developers out there 20 00:00:56,710 --> 00:00:59,860 which only use Docker locally on their system 21 00:00:59,860 --> 00:01:02,510 to have these isolated projects 22 00:01:02,510 --> 00:01:05,460 and avoid clashes between versions and run times 23 00:01:05,460 --> 00:01:08,010 when they are working on multiple projects. 24 00:01:08,010 --> 00:01:09,960 So Docker is not just there 25 00:01:09,960 --> 00:01:13,420 for deploying containers onto a remote machine 26 00:01:13,420 --> 00:01:16,070 and exposing your app to real users. 27 00:01:16,070 --> 00:01:18,340 It's perfectly fine to use Docker 28 00:01:18,340 --> 00:01:20,610 just locally on your system 29 00:01:20,610 --> 00:01:23,340 because it offers many advantages there. 30 00:01:23,340 --> 00:01:26,400 But of course, we can also deploy our containers 31 00:01:26,400 --> 00:01:29,400 onto remote machines, onto remote hosts 32 00:01:29,400 --> 00:01:32,760 basically for the same reasons why it's awesome locally. 33 00:01:32,760 --> 00:01:34,980 We have isolated, encapsulated 34 00:01:34,980 --> 00:01:38,930 and most importantly, reproducible environments. 35 00:01:38,930 --> 00:01:42,490 What worked locally will work on a remote machine as well. 36 00:01:42,490 --> 00:01:44,750 There are no unwanted surprises 37 00:01:44,750 --> 00:01:46,530 because it's all in the container 38 00:01:46,530 --> 00:01:49,460 and all in the image for that container. 39 00:01:49,460 --> 00:01:51,210 Updating is also simple 40 00:01:51,210 --> 00:01:54,440 because we just need to replace an existing container 41 00:01:54,440 --> 00:01:55,910 with the updated one 42 00:01:55,910 --> 00:01:59,030 which for example, contains the updated source code. 43 00:01:59,030 --> 00:02:02,630 So we just replaced the existing container and we're good. 44 00:02:02,630 --> 00:02:05,210 There is no complex updating process involved. 45 00:02:05,210 --> 00:02:06,940 That's all we gotta do. 46 00:02:06,940 --> 00:02:09,250 So Docker really is amazing for both. 47 00:02:09,250 --> 00:02:12,110 And it's up to you whether you wanna use it for both 48 00:02:12,110 --> 00:02:15,650 or maybe whether it's enough for you to work with it locally 49 00:02:15,650 --> 00:02:18,840 because you don't deploy applications in general maybe, 50 00:02:18,840 --> 00:02:21,330 because you've just got a bunch of side projects 51 00:02:21,330 --> 00:02:24,660 or maybe because also deploying Docker containers 52 00:02:24,660 --> 00:02:26,590 is a bit too much overhead 53 00:02:26,590 --> 00:02:29,010 for the kind of application you're building. 54 00:02:29,010 --> 00:02:31,290 So these are the two main areas 55 00:02:31,290 --> 00:02:33,710 where you can use Docker and containers, 56 00:02:33,710 --> 00:02:36,663 and Docker and containers do shine in both of them.