Useful commands

Here's a collection of useful commands for using docker within DataMade's stack.

Reclaiming space

Sometimes docker behaves weirdly and fails to build / restarts suddenly. This is typically because it ran out of hard drive space.

docker volume rm $(docker volume ls -qf dangling=true)

List dangling volumes:

docker volume ls -qf dangling=true

List all volumes:

docker volume ls

Remove <none> images that sometimes get generated when a Docker build is interrupted and then hang around:

docker rmi $(docker images | grep '^<none>' | awk '{print $3}')

Connect to the container's bash session:

docker-compose run --rm app bash

Connect to the Django shell:

docker-compose run --rm app python manage.py shell

List all of the running containers:

docker ps

Kill a specific container:

docker kill <pid> # you got the PID from the docker ps command

Remove all volumes from your machine (this one will take a while and will require you to rebuild any image you want to use again):

docker system prune --all

Build without using the cache:

docker-compose build --no-cache

Add a new npm package:

docker-compose run --rm app npm install <package-name>

List all the containers (not only the running ones):

docker ps -a

Debug your image:

docker logs <my-container-image>

Attach to a pdb session. First get the process id (via docker ps) and then:

docker attach 833ec224bdeb