Exploring Docker container's file system

 linux - Exploring Docker container's file system - Stack Overflow

docker ps

A) Use docker exec (easiest)

Docker version 1.3 or newer supports the command exec that behave similar to nsenter. This command can run new process in already running container (container must have PID 1 process running already). You can run /bin/bash to explore container state:

docker exec -t -i mycontainer_id /bin/bash

see Docker command line documentation