How to run a Command in running Container

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. C:\>docker exec --help Usage: docker exec [OPTIONS] CONTAINER COMMAND [ARG...] Run a command in a running container Options: -d, --detach Detached mode: run command in the background --detach-keys string Override the key sequence for detaching a container -e, --env list Set environment variables --env-file list Read in a file of environment variables -i, --interactive Keep STDIN open even if not attached --privileged Give extended privileges to the command -t, --tty Allocate a pseudo-TTY -u, --user string Username or UID (format: <name|uid>[:<group|gid>]) -w, --workdir string Working directory inside the container C:\>docker exec -it ea3ee8f5f033 /bin/bash jenkins@ea3ee8f5f033:/$ cat /var/jenkins_home/secrets/initialAdminPassword admin_secret_password jenkins@ea3ee8f5f033:/$ C:\>docker run --help Usage: docker run [OPTIONS] IMAGE [COMMAND] [ARG...] Run a command in a new container C:\>docker run busybox ping bethecoder.com PING bethecoder.com (172.67.160.148): 56 data bytes 64 bytes from 172.67.160.148: seq=0 ttl=37 time=676.792 ms 64 bytes from 172.67.160.148: seq=1 ttl=37 time=416.541 ms 64 bytes from 172.67.160.148: seq=2 ttl=37 time=418.229 ms 64 bytes from 172.67.160.148: seq=3 ttl=37 time=555.491 ms 64 bytes from 172.67.160.148: seq=4 ttl=37 time=418.092 ms 64 bytes from 172.67.160.148: seq=5 ttl=37 time=501.077 ms 64 bytes from 172.67.160.148: seq=6 ttl=37 time=413.216 ms