"docker container run" - Create Container with New Command
How to Create a new Container with a New Command using the "docker container run" command?
If you want to create an Alpine container that starts with a new command different than the default command, you need to use the "docker container run" command with your Linux command specified.
1. Create a new container with "alpine" image and start it with "ping google.com" running in the container.
$ docker container run --name 2nd_alpine alpine ping google.com PING google.com (188.8.131.52): 56 data bytes 64 bytes from 184.108.40.206: seq=0 ttl=49 time=1.941 ms 64 bytes from 220.127.116.11: seq=1 ttl=49 time=1.829 ms 64 bytes from 18.104.22.168: seq=2 ttl=49 time=2.203 ms 64 bytes from 22.214.171.124: seq=3 ttl=49 time=1.741 ms 64 bytes from 126.96.36.199: seq=4 ttl=49 time=1.814 ms 64 bytes from 188.8.131.52: seq=5 ttl=49 time=1.830 ms ^C --- google.com ping statistics --- 15 packets transmitted, 15 packets received, 0% packet loss round-trip min/avg/max = 1.682/1.907/2.615 ms $
2. Check the container status.
$ docker container list --latest CONTAINER ID IMAGE COMMAND CREATED STATUS NAMES fddc7452d4f6 alpine "ping google.com" About a minute ago Exited (0) 5 seconds ago 2nd_alpine
As you can see, the new container was started with the "ping google.com" command. Its console is attached to my hosting console. That's why I can see the "ping" output.
You can press Ctrl-C to terminate the "ping" command. But that also ends the execution of the container.
But the console output of the container execution is still maintained in the container. You can fetch it with the "docker container logs" command.
2019-02-06, 417👍, 0💬
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