Commonly-used Docker Commands: Reference and Examples

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HEADS-UP: Use sudo if you get an error message like the following upon trying to run any of the commands: Cannot connect to the Docker daemon. Is the docker daemon running on this host?

List running containers

$ docker ps

SSH to a Running Container

Suppose the container ID is 9cc87276ac44:

$ docker exec -it 9cc /bin/bash
root@9cc87276ac44:/#

Start a Container exposing port 80

Suppose the image name is my-docker-app

$ docker run -p 80:80 -it my-docker-app

Start a Container in the Background exposing port 80

Same as above, adding d to the options:

$ docker run -p 80:80 -dit my-docker-app

See also

Dialogue & Discussion