Docker - goatandsheep/goatandsheep.github.com GitHub Wiki

Clear your broken images here: docker rmi $(docker images | grep '^<none>' | awk '{print $3}')

Multi-stage Docker: you always use the container of the final stage, but you can bring things generated from previous stages into the current stage

Docker compose: for multiple images

Docker run environment: -e var=val

Or take it from file, like a .env: --env-file filename