Managing Containers

Common commands overview

Command	Description
`docker ps [-a]`	Shows currently running containers. Adding `-a` displays both running and stopped (past) containers.
`docker start`	Starts a container from a locally stored image.
`docker stop`	Stops a container using Linux `SIGTERM`, allowing it to terminate gracefully.
`docker restart`	Restarts a currently running or stopped container.
`docker kill`	Stops a container using Linux `SIGKILL`, which forces immediate termination.
`docker rm`	Removes container files from the host operating system after stopping the container.

Inspecting container setting

Command	Description
`docker ps`	Shows the IDs of currently running containers.
`docker inspect <ID>`	Inspects the container’s details and pipes the output to `less` for easier reading.
`docker inspect --format='{{.NetworkSettings.IPAddress}}' containername`	Displays the IP address of a specific container by its name.
`docker inspect --format containername`	Inspects the container and returns details using a specific format defined by the user.
`ps aux` on the host machine	Finds the container’s PID (Process ID) on the host system.

Output


controlplane $ docker inspect --format='{{.NetworkSettings.IPAddress}}' xander
172.17.0.2
controlplane $ docker inspect --format='{{.State.Pid}}' xander
47704
controlplane $ docker ps -a
CONTAINER ID   IMAGE     COMMAND                  CREATED         STATUS         PORTS                                   NAMES
684c0acaa0c5   nginx     "/docker-entrypoint.…"   3 minutes ago   Up 3 minutes   0.0.0.0:8080->80/tcp, :::8080->80/tcp   xander