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docker.md

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Docker

Docker cheatsheet.

Build

docker image build -t IMAGE:1.0.0 .
docker build -t IMAGE:1.0.0 .       # Build IMAGE:1.0.0 using Dockerfile in .
docker images
docker image ls                     # List all locally stored images
docker image rm IMAGE:1.0.0         # Remove local IMAGE:1.0.0
docker image prune [-a]             # Remove local unused dangling/[all] images
docker image history IMAGE          # Show history of IMAGE

NOTE: Dangling image is image of fs layer that is not associated with any of tagged images. Unused image is any image that is not use by any container.

Run

docker run [--rm] IMAGE:1.0.0       # Run IMAGE:1.0.0 and clean up
docker run -d IMAGE:1.0.0           # Run IMAGE:1.0.0 in background
docker run -p DEST:SRC IMAGE:1.0.0  # Run IMAGE:1.0.0; expose port SRC as DEST
docker run --name NAME IMAGE:1.0.0  # Run IMAGE:1.0.0 as NAME
docker ps [-a]
docker container ls [-a]            # See running [-a] containers
docker stop|kill NAME               # Send SIGTERM|SIGKILL to container
docker rm -f $(docker ps -aq)       # Delete all (also stopped) containers

Run in background a container referred to as NAME using image IMAGE:1.0.0 exposing guest port SRC on host running Docker as DEST:

docker run -d --name NAME -p DEST:SRC IMAGE:1.0.0

Console and Logs

docker exec -it NAME CMD            # Run CMD interactively in container NAME
docker attach NAME                  # Attach terminal to container NAME
docker container logs NAME
docker logs NAME                    # Show logs for container NAME
docker logs --tail N NAME           # Show last N lines of logs for NAME

Get bash in running container referred to as NAME:

docker exec -it NAME /bin/bash

Troubleshooting

Docker Desktop and WSL

  • Enable Expose daemon on tcp://localhost:2375 without TLS
  • In WSL DOCKER_HOST=127.0.0.1:2375
  • To be able to pull images from Docker hub (to be able to docker login) in WSL inside your $PATH create docker-credential-desktop executable file with following contents: 
    #!/bin/sh
/mnt/c/Program\ Files/Docker/Docker/resources/bin/docker-credential-desktop.exe $@