docker.md

Docker

Resource Usage

Display resource usage statistics:

docker stats --no-stream

Platform

Choose another CPU architecture:

docker run --platform linux/amd64 -it debian:latest

Dockerfile:

FROM --platform=linux/amd64 debian:latest

Entrypoint vs. CMD

docker run -it --entrypoint "/bin/sh -c" alpine:latest <CMD>

	Entrypoint	CMD
Default:	/bin/sh -c	none
Dockerfile:	ENTRYPOINT	CMD
CLI:	--entrypoint

• The entrypoint is always executed
• CMD only if specified in the Dockerfile or given in the docker run command

Buildkit

DOCKER_BUILDKIT=1 docker build --tag image:name .

By integrating BuildKit, users should see an improvement on performance, storage management, feature functionality, and security.

https://docs.docker.com/develop/develop-images/build_enhancements/

Prune

Remove all Volumes:

docker volume rm $(docker volume ls -q --filter dangling=true)

Remove all Images:

docker system prune