#helpers

Dockering.md

Whats what

• Dockerfile builds an image
• A container is started from that image
• Multiple containers can be started and running simultaneously from a single image

Frequently used commands

• enter a docker bash session
  • use docker ps -a to see all containers
  • get NAME of desired container
  • enter the bash session
    • docker exec -t -i <container name> /bin/bash
• another way to enter bash session
  • docker-compose exec <container name sh
• third way to enter a bash session
  • docker-compose run <containter name> bash
• docker ps
  • shows all running containers
• docker ps -a
  • shows all containers, running or not
• docker inspect --format "{{.State.Running}}" wp
  • wp is name of container
  • shows boolean if container is running
• docker logs <container name>
• docker stop $(docker ps -a -q)
  • stop all running containers

Docker space issue

https://forums.docker.com/t/docker-doesnt-release-disk-space-used-by-library-containers-com-docker-docker/15194

Prune docker from harddrive

docker image prune

https://www.digitalocean.com/community/tutorials/how-to-remove-docker-images-containers-and-volumes