DevOps Classroom series – 30/Jan2020

Container States

• Running (Started)
• Exited (Stopped)
• Paused

Docker Container Creation modes

• Attached mode:
  • Our terminal will recieve outputs from containter stdout, stderr

  docker container run jenkins
  
  # press ctrl+c to exit the container and also the container outputs to your terminal
  

• Detached Mode (background)
  • Container runs in the background an you will recieve container id

  docker container run -d jenkins
  

• Interactive Terminal
  • Create a container and login into interactive shell

  docker container run -it jenkins /bin/bash
  docker container run -it alpine /bin/sh
  
  

Listing Containers

• docker container ls or docker ps will show all the containers in running state
• docker container ls -a or docker ps -a will show all the containers in running and stopped state

Removing Containers

• Containers can be removed from stopped state, if they are in running state you have to force the delete
• To remove containers we need name/id

docker container rm <name-or-id>

docker container rm <name-or-id-container1> <name-or-id-container2> .. 

• To remove all the containers

docker container rm -f $(docker container ls -a -q)

Docker CLI

• Cheatsheet
• use –help

docker container run --help

• Use Docker Documentation from here