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John Kevin Losito
John Kevin Losito

Posted on • Updated on • Originally published at

Key Docker Commands

Compilation of most used Docker commands.

  • docker build . : Build a Dockerfile and create your own Image based on the file
    • -t NAME:TAG : Assign a NAME and a TAG to an image
      • docker build -t myapp:1.0 .
  • docker run IMAGE_NAME : Create and start a new container based on image IMAGE_NAME
    • --name NAME : Assign a NAME to the container. The name can be used for stopping and removing etc.
    • -d : Run the container in detached mode – i.e. output printed by the container is not visible, the command prompt/terminal does NOT wait for the container to stop
    • -it : Run the container in “interactive” mode – the container/application is then prepared to receive input via the command prompt/terminal. You can stop the container with CTRL + C when using the -it flag.
    • --rm : Automatically remove the container when it’s stopped
  • docker ps : List all running containers.
    • -a : List all containers including stopped ones.
  • docker images : List all stored images
  • docker rm CONTAINER : Remove a container with the name CONTAINER
  • docker rmi IMAGE : Remove an IMAGE
  • docker container prune : Remove all stopped containers
  • docker image prune : Remove all untagged images
    • -a : Remove all locally stored images
  • docker push IMAGE : Push an image to DockerHub (or another registry) – the image name/tag must include the repository name/ URL
    • docker push johnkevinlosito/myapp
  • docker pull IMAGE : Pull (download) an image from DockerHub (or another registry) – this is done automatically if you just docker run IMAGE and the image wasn’t pulled before
  • docker run -v /path/in/container IMAGE : Create an anonymous volume inside the container
  • docker run -v some-name:/path/in/container IMAGE : Create a named volume (some-name) inside a Container
  • docker run -v /path/on/your/host/machine:path/in/container IMAGE : Create a BindMount and connect a local path on your host machine to some path in the Container
  • docker volume ls : List all currently active/stored volumes (by all Containers)
  • docker volume rm VOL_NAME : Remove a volume by its name
  • docker volume prune : Remove all unused volumes (i.e. not connected to a currently running or stopped container)
  • docker network create NETWORK_NAME : Create a container network
  • docker run -network NETWORK_NAME --name my-container my-image : Run a container on the network (network must be created first)
  • docker-compose up: Start all containers/services mentioned in the Docker Compose file
    • -d: Start in detached mode
    • --build : Force Docker Compose to rebuild all images
  • docker-compose down : Stop and remove all containers/services
    • -v : Remove all Volumes used for the Containers – otherwise, they stay around, even if the Containers are removed

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