1 00:00:00,660 --> 00:00:05,090 In the last section we created our service account and we downloaded a case on file that contains some 2 00:00:05,090 --> 00:00:07,260 credentials for that service account. 3 00:00:07,310 --> 00:00:11,900 We now need to download and install the Travis Seelye which is a program that we're going to use to 4 00:00:11,930 --> 00:00:16,830 encrypt that service account based on file and tie it to our Travis C.I. account. 5 00:00:16,910 --> 00:00:20,710 Remember the entire idea behind this is that the Jason File we just download it. 6 00:00:20,730 --> 00:00:24,330 So this one right here has some very sensitive information inside of it. 7 00:00:24,380 --> 00:00:28,550 And we do not want to expose it to the outside world from our get hub account. 8 00:00:28,550 --> 00:00:28,880 All right. 9 00:00:28,880 --> 00:00:34,360 So to download and install the Travis Seelye we can go to get hakama. 10 00:00:34,370 --> 00:00:35,160 Blah blah blah. 11 00:00:35,240 --> 00:00:37,610 And download this thing and install it. 12 00:00:37,620 --> 00:00:43,750 However there's just one little awkward thing about the Travis CLID and that is that requires Rubie 13 00:00:43,760 --> 00:00:45,790 to be installed on your local system. 14 00:00:45,800 --> 00:00:52,210 Now if you're on a Mac OS machine you're in luck because by default Ruby is installed on Mac OS. 15 00:00:52,220 --> 00:00:56,970 However if you are on Windows well life is a little bit harder on Windows. 16 00:00:56,990 --> 00:01:03,760 Installing Ruby is a little bit more challenging and it's kind of a pain in the rear. 17 00:01:03,850 --> 00:01:07,840 Now I would hate to have to go through the installation process with you if you're on Windows because 18 00:01:07,840 --> 00:01:12,940 it is a little bit of a pain and it takes a decent amount of time but there is a little work around 19 00:01:13,000 --> 00:01:14,110 that we can use. 20 00:01:14,140 --> 00:01:17,440 I want you to remember what we've been doing in this entire course. 21 00:01:17,530 --> 00:01:22,930 We've been creating darker images and containers and the entire purpose of these containers is that 22 00:01:22,930 --> 00:01:28,660 we can very easily get some different environment up and running on our local machine with some very 23 00:01:28,660 --> 00:01:32,290 customized dependencies inside that container. 24 00:01:32,290 --> 00:01:37,720 So I think that rather than trying to install Ruby locally on your machine especially if you are on 25 00:01:37,720 --> 00:01:44,630 Windows instead let's try getting a docker image that has Ruby pre-installed inside of it. 26 00:01:45,540 --> 00:01:48,420 So we're going to get an image that has Ruby pre-installed. 27 00:01:48,570 --> 00:01:54,150 Well then open up a shell or a terminal inside that container and then we'll use that to install and 28 00:01:54,150 --> 00:01:55,870 run that Travis Seelye. 29 00:01:55,930 --> 00:01:59,940 There's only a single command we have to run with Travis Seelye Selye essentially you know just the 30 00:01:59,940 --> 00:02:02,820 one command to encrypt that file that we care about. 31 00:02:02,910 --> 00:02:07,230 So we don't really need a persistent version of the Travis Selye to sit around because we just want 32 00:02:07,230 --> 00:02:09,500 to use at one time and then throw it away. 33 00:02:09,600 --> 00:02:13,800 So this would actually be a great use case where we could use a dock or container with Ruby already 34 00:02:13,800 --> 00:02:19,620 installed inside of it to install install Travis Seelye use it to encrypt the file and then throw the 35 00:02:19,620 --> 00:02:22,780 entire container away because we don't need it for anything else. 36 00:02:23,190 --> 00:02:24,560 So let's give this a shot. 37 00:02:25,730 --> 00:02:30,200 Now in the section as we go through this process we are going to be running a good number of commands 38 00:02:30,480 --> 00:02:34,550 and so I wanted to put all the commands up here in all the different steps are going to go through just 39 00:02:34,580 --> 00:02:37,220 in case you are skipping does video rather quickly. 40 00:02:37,220 --> 00:02:40,610 I want to make sure that you don't accidentally skip one of the commands inside of here. 41 00:02:40,760 --> 00:02:45,320 So I would almost recommend that you take a screenshot of this diagram right here just to make sure 42 00:02:45,320 --> 00:02:48,450 that you nail each and every one of these commands. 43 00:02:48,620 --> 00:02:53,900 So the first thing that we're going to do is execute a docker run command the image that we're going 44 00:02:53,900 --> 00:03:00,510 to be running is Ruby version 2.3 and then at the same time we're going to start up a shell inside there. 45 00:03:00,710 --> 00:03:03,020 And we're also going to set up a volume. 46 00:03:03,020 --> 00:03:09,020 The purpose of the volume right here is to eventually get the service account on file inside the container. 47 00:03:09,020 --> 00:03:10,910 Remember this is the file that we want to encrypt. 48 00:03:10,940 --> 00:03:13,780 So we need to make sure that it is available inside the container. 49 00:03:14,180 --> 00:03:16,400 So we're going to use a volume to do that. 50 00:03:16,460 --> 00:03:20,490 Now notice that we're using the dollar sign parentheses interpellation here. 51 00:03:20,510 --> 00:03:26,690 This is only valid if you're on a UNIX based system or if you're on Windows using get bash as your terminal. 52 00:03:26,690 --> 00:03:31,970 If you are on Windows and you're using something like the command line or Cowper's shell you're going 53 00:03:31,970 --> 00:03:33,920 to use curly braces instead. 54 00:03:33,920 --> 00:03:35,950 So just be aware that little difference. 55 00:03:36,490 --> 00:03:38,200 OK so let's get to it. 56 00:03:38,210 --> 00:03:42,320 I'm going to open up my terminal and I'm going to make sure that I'm inside of my complex directory 57 00:03:42,410 --> 00:03:49,010 because we're going to eventually put that JS on file inside of here and encrypt it and we're using 58 00:03:49,010 --> 00:03:53,750 specifically the complex directory because remember we're going to make sure that the volume is available 59 00:03:54,020 --> 00:03:55,420 inside the container. 60 00:03:55,460 --> 00:04:05,780 So do Daka run dash dash V to set up the volume or say sign PWT to say present working directory of 61 00:04:05,870 --> 00:04:12,710 the complex folder or then do a colon and I'm going to map this present working directory of complex 62 00:04:12,920 --> 00:04:16,670 to the folder about app inside the container. 63 00:04:16,670 --> 00:04:19,340 Now we don't actually have any app thing to put inside the container. 64 00:04:19,340 --> 00:04:22,940 I'm just choosing that folder name toll at totally at random. 65 00:04:22,950 --> 00:04:26,120 You could probably figure out a better name but honestly it just doesn't really matter that much. 66 00:04:27,050 --> 00:04:34,260 Well then specify the image of Ruby 2.3 and then the command that I want to run inside of this container 67 00:04:34,320 --> 00:04:39,490 is S.H. to start a shell inside their sung and run this command. 68 00:04:40,480 --> 00:04:45,610 Now when I run the command I immediately get kicked into a terminal right here or a shell inside the 69 00:04:45,610 --> 00:04:46,310 container. 70 00:04:46,390 --> 00:04:50,110 Because I've already downloaded the ruby image in the past for you. 71 00:04:50,140 --> 00:04:54,610 You probably need to download this image and so it's going to take maybe a minute or two to download 72 00:04:54,610 --> 00:04:56,880 the image and then eventually create a container out of it. 73 00:04:57,040 --> 00:05:01,570 So I encourage you to pause if you're right now and just leave it paused until you eventually get into 74 00:05:01,570 --> 00:05:05,220 a shell like so OK. 75 00:05:05,240 --> 00:05:10,750 So if you're now here I'm going to assume that you've successfully gotten into a shell inside the container. 76 00:05:11,000 --> 00:05:14,270 So if we now do an ls we can see that app folder. 77 00:05:14,300 --> 00:05:15,590 So there's the app folder right there. 78 00:05:15,590 --> 00:05:18,650 The one that we just set up as a volume. 79 00:05:18,700 --> 00:05:22,990 If I change into that app folder and I encourage you to do so right now as well so I can to make sure 80 00:05:22,990 --> 00:05:24,510 I'm inside that folder. 81 00:05:24,670 --> 00:05:32,300 I can do an ls and I'll see all of the project folders out of our original complex directory so definitely 82 00:05:32,300 --> 00:05:33,770 worked out pretty well so far. 83 00:05:34,090 --> 00:05:37,570 So now the next thing we're going to do is install Travis. 84 00:05:37,610 --> 00:05:39,930 This is the Travis Selye. 85 00:05:40,100 --> 00:05:41,960 We're installing it by using the program. 86 00:05:41,990 --> 00:05:46,760 Jim Jim is essentially a dependency manager for the Ruby programming language. 87 00:05:46,760 --> 00:05:55,610 So we're using the gym program to install Travis they'll do Jim install Travis and I'll put on no dash. 88 00:05:55,750 --> 00:05:58,520 Dock and no Arye. 89 00:05:58,880 --> 00:06:02,500 And these two flags over here at the right hand side these are 100 percent optional. 90 00:06:02,510 --> 00:06:06,900 They're essentially saying Do not attempt to install any documentation along with this Jim. 91 00:06:06,920 --> 00:06:10,020 It just makes the installation go very very slightly faster. 92 00:06:10,790 --> 00:06:16,490 All right so I got to run this and then we're going to very quickly see everything get installed. 93 00:06:17,330 --> 00:06:17,720 All right. 94 00:06:17,720 --> 00:06:19,310 Now looks like I paused there for a second. 95 00:06:19,310 --> 00:06:23,320 On building native extensions now something kind of interesting. 96 00:06:23,320 --> 00:06:28,610 I want to mention this is a total side topic completely unrelated from all this Travis stuff and you're 97 00:06:28,610 --> 00:06:32,200 probably going to hate me for going on a side topic while we're running all these intense commands. 98 00:06:32,210 --> 00:06:34,180 But I I half do it. 99 00:06:34,190 --> 00:06:36,040 I have to tell you about this side topic. 100 00:06:36,080 --> 00:06:38,230 I feel 100 percent compelled to do so. 101 00:06:38,240 --> 00:06:42,500 So you notice during that entire process it says building native extensions right here. 102 00:06:42,500 --> 00:06:48,050 That's essentially a step we're Ruby and the gym program are taking a bunch of ruby source code files 103 00:06:48,170 --> 00:06:51,890 and essentially compiling them to get them to work on your local system. 104 00:06:51,890 --> 00:06:57,590 Now that's kind of a build step and it requires some modules inside of Ruby to be installed or essentially 105 00:06:57,590 --> 00:07:01,320 is kind of it development programs to be installed with Ruby. 106 00:07:01,340 --> 00:07:06,800 One thing you might notice that's kind of interesting is when we originally ran that Daka run command 107 00:07:06,800 --> 00:07:12,200 right here we specified a image tagged as 2.3 from Ruby. 108 00:07:12,200 --> 00:07:21,170 If you actually open up the docker hub page it's a ducker hub for that Ruby image we just made use of 109 00:07:21,180 --> 00:07:24,260 song in a search for Ruby and then go to the repository right here. 110 00:07:24,260 --> 00:07:30,250 You'll notice that there are a ton of other versions available some of which are tagged as Alpine. 111 00:07:30,260 --> 00:07:35,300 So remember a Alpine version of an image is essentially just saying hey this is a stripped down version 112 00:07:35,300 --> 00:07:40,180 of the image with just the bare minimum required to get this thing running. 113 00:07:40,340 --> 00:07:46,550 Now in our case we had to install a gym that did this extra build step in like I said that requires 114 00:07:46,550 --> 00:07:53,050 some extra packages to be installed with Ruby if we had to use the Alpine version of this Ruby image. 115 00:07:53,060 --> 00:07:57,890 This step right here would have actually completely failed because remember the Alpine version is 100 116 00:07:57,890 --> 00:08:03,740 percent stripped down and so the Alpine version of the Ruby image does not have those extra practice 117 00:08:03,740 --> 00:08:07,700 required to do this step of building a native extension. 118 00:08:07,880 --> 00:08:09,460 So if we had used. 119 00:08:09,650 --> 00:08:12,630 I keep scrolling up because I think the command is up there but it's not. 120 00:08:12,680 --> 00:08:19,220 If we had used an Alpine version like say Alpine 2.3 right here that Jim install step would have failed 121 00:08:19,250 --> 00:08:23,900 because we did not have all the dependencies required to build this Jim. 122 00:08:23,920 --> 00:08:28,780 So this is a great example where the Alpine version of an image is not always the best solution. 123 00:08:28,940 --> 00:08:30,360 Not always the best solution. 124 00:08:30,740 --> 00:08:30,990 OK. 125 00:08:31,010 --> 00:08:36,320 I apologize for that little quick aside I just had to mention it I felt compelled like I mentioned. 126 00:08:36,680 --> 00:08:36,920 All right. 127 00:08:36,920 --> 00:08:39,140 So looks like everything successfully got installed. 128 00:08:39,850 --> 00:08:43,100 So now to make sure everything is set up correctly I'll do the command. 129 00:08:43,100 --> 00:08:47,730 Travis like so it's going to ask me if I want to install some shell completion. 130 00:08:47,750 --> 00:08:50,140 This is essentially some autocomplete stuff. 131 00:08:50,240 --> 00:08:53,590 We don't need it because we're just running like one or two commands here. 132 00:08:53,610 --> 00:08:54,650 Soldiers say no. 133 00:08:55,660 --> 00:09:00,400 And then after that I'll get prompted here with the list of all the commands that are available to me 134 00:09:00,430 --> 00:09:03,300 tied to the Travis Selye OK. 135 00:09:03,300 --> 00:09:08,310 So Travis is definitely up and running successfully without us having to go through that long process 136 00:09:08,310 --> 00:09:09,750 of installing Ruby. 137 00:09:09,750 --> 00:09:13,710 Now let's take a quick pause right here and come back the next section and we're going to continue going 138 00:09:13,710 --> 00:09:15,390 through a couple of other steps. 139 00:09:15,390 --> 00:09:17,260 So quick break and I'll see you in just a minute.