docker-cheat-sheet.md

Images

• docker build . build
  
• docker build -t repo:tag . build with tag
  
• docker images list
  
• docker inspect image_id inspect
  
• docker rmi image_id delete
  
• docker run image_id create + start
  
• docker tag image_id repo:tag tag
  

Container

• docker create image_id create
  
• docker exec -it container_id bash exec bash
  
• docker ps list running
  
• docker ps -a list all
  
• docker start container_id start
  
• docker stop container_id stop
  
• docker cp container_id:/path/file/ /path/file copies file out of container
  
• docker rm container_id delete container
  

Docker Compose

• docker-compose up tbd
  
• docker-compose build tbd
  

Misc

Layer indicates changes that are made to an image.

FROM rails:onbuild                   < Base-layer
ENV RAILS_ENV production             < layer 2
ENTRYPOINT ["bundle", "exec", "puma”]< layer 3