1
00:00:00,001 --> 00:00:03,934
[No Audio]

2
00:00:03,934 --> 00:00:07,634
Just like previous demos, we have a list of container here.

3
00:00:07,634 --> 00:00:11,001
Now, let's use docker container attach command.

4
00:00:11,001 --> 00:00:13,379
It means that we are attaching the

5
00:00:13,379 --> 00:00:17,249
standard I/O and standard error of our container to

6
00:00:17,249 --> 00:00:19,767
the terminal of our Docker client.

7
00:00:20,367 --> 00:00:25,167
We have attached my busybox container here, so let's hit enter.

8
00:00:25,934 --> 00:00:28,349
As you can see, now we are accessing

9
00:00:28,349 --> 00:00:31,709
standard I/O or terminal of busybox from our

10
00:00:31,709 --> 00:00:36,209
Ubuntu terminal. If we hit ls, we will see a list

11
00:00:36,209 --> 00:00:39,701
of available directories in busybox root environment.

12
00:00:39,701 --> 00:00:41,639
We can play around a bit more to

13
00:00:41,639 --> 00:00:43,667
navigate to other directories as well.

14
00:00:43,667 --> 00:00:48,267
If we exit it, we return back to our Ubuntu host terminal.

15
00:00:48,667 --> 00:00:51,567
And there is an interesting aspect to the attach command.

16
00:00:51,567 --> 00:00:54,449
When we list the containers again, we can

17
00:00:54,449 --> 00:00:58,234
see that my-busybox container is not running,

18
00:00:58,234 --> 00:01:02,249
it has exited a few seconds ago. In other words,

19
00:01:02,249 --> 00:01:05,301
attaching the container conditions it to be

20
00:01:05,301 --> 00:01:08,034
stopped when we exit the attachment.

21
00:01:08,134 --> 00:01:11,901
An alternative to this is docker exec command,

22
00:01:11,901 --> 00:01:15,689
it allows us to use any command we want and it

23
00:01:15,689 --> 00:01:19,867
executes the container but before let's start our container again.

24
00:01:21,301 --> 00:01:23,519
Now we have used docker exec

25
00:01:23,519 --> 00:01:27,179
which stands for execute with -it flag and

26
00:01:27,179 --> 00:01:30,689
have directed it to run and print the result of

27
00:01:30,689 --> 00:01:35,567
pwd command. Once it succeeds, we have the

28
00:01:35,567 --> 00:01:38,601
'/', which indicates root of our busybox.

29
00:01:38,601 --> 00:01:41,867
Unlike attach, if we list the containers again,

30
00:01:41,867 --> 00:01:44,667
we'll find our containers still up and running.