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How to run a Command in running Container
Author: Venkata Sudhakar
Docker is an open platform to develop, ship, and run containerized applications.
It separates infra from application to ease application development and support anywhere development strategy. The below example shows how to run a Command in running Container.
03 | Usage: docker exec [OPTIONS] CONTAINER COMMAND [ARG...] |
05 | Run a command in a running container |
08 | -d, --detach Detached mode: run command in the background |
09 | --detach-keys string Override the key sequence for detaching a |
11 | -e, --env list Set environment variables |
12 | --env-file list Read in a file of environment variables |
13 | -i, --interactive Keep STDIN open even if not attached |
14 | --privileged Give extended privileges to the command |
15 | -t, --tty Allocate a pseudo-TTY |
16 | -u, --user string Username or UID (format: |
17 | <name|uid>[:<group|gid>]) |
18 | -w, --workdir string Working directory inside the container |
20 | C:\>docker exec -it ea3ee8f5f033 /bin/bash |
21 | jenkins@ea3ee8f5f033:/$ cat /var/jenkins_home/secrets/initialAdminPassword |
23 | jenkins@ea3ee8f5f033:/$ |
28 | Usage: docker run [OPTIONS] IMAGE [COMMAND] [ARG...] |
30 | Run a command in a new container |
32 | C:\>docker run busybox ping bethecoder.com |
33 | PING bethecoder.com (172.67.160.148): 56 data bytes |
34 | 64 bytes from 172.67.160.148: seq=0 ttl=37 time=676.792 ms |
35 | 64 bytes from 172.67.160.148: seq=1 ttl=37 time=416.541 ms |
36 | 64 bytes from 172.67.160.148: seq=2 ttl=37 time=418.229 ms |
37 | 64 bytes from 172.67.160.148: seq=3 ttl=37 time=555.491 ms |
38 | 64 bytes from 172.67.160.148: seq=4 ttl=37 time=418.092 ms |
39 | 64 bytes from 172.67.160.148: seq=5 ttl=37 time=501.077 ms |
40 | 64 bytes from 172.67.160.148: seq=6 ttl=37 time=413.216 ms |
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