Attaching a bash shell to a running Docker container#

Use docker ps to find the container ID:

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$ docker ps
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CONTAINER ID        IMAGE                        COMMAND                  CREATED             STATUS              PORTS               NAMES
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81b2ad3194cb        alexdebrie/livegrep-base:1   "/livegrep-github-re…"   2 minutes ago       Up 2 minutes                            compassionate_yalow

Run docker exec -it ID bash to start a bash session in that container:

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$ docker exec -it 81b2ad3194cb bash

I made the mistake of using docker attach 81b2ad3194cb first, which attaches you to the command running as CMD in that conatiner, and means that if you hit Ctrl+C you exit that command and terminate the container!