Docker

One-Off Containers

$ docker run --rm -it "$image" sh

• $image might be alpine, node:latest etc.
• -v "$PWD:/tmp/dev" mounts the current working directory within the container
• -e VARIABLE=… sets environment variables

alternatively using a local Dockerfile:

$ docker run --rm -it $(docker build -q .)

Interactive Debugging

$ docker exec -it "$name" sh

connects to a running container identified by $name

Cleaning Up

• tabula rasa: docker system prune and docker volume prune
• kill running containers: docker ps -q | xargs docker kill
• delete stopped containers: docker ps -aq | xargs docker rm
• delete untagged images: docker images -q -f dangling=true | xargs docker rmi (omitting -f dangling=true will remove all images)

Podman

Podman mostly works as a drop-in replacement for Docker.

$ podman machine init

$ podman machine start
$ export DOCKER_HOST="unix://$(podman machine inspect --format '{{.ConnectionInfo.PodmanSocket.Path}}')"

$ podman container prune
$ podman image prune
$ podman machine rm