Docker registry garbage collect

Free disk space in a self-hosted Docker Registry

docker exec -it registry bin/registry garbage-collect /etc/docker/registry/config.yml
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docker

More docker commands

  • Multi-stage build target
    docker build --target builder -t img:builder .

    Build only up to a specific stage in a multi-stage Dockerfile

  • Build with build args
    docker build --build-arg APP_VERSION=1.2.3 --build-arg ENV=prod -t myapp:1.2.3 .

    Pass build-time variables to Dockerfile ARG instructions

  • Multi-platform build
    docker buildx build --platform linux/amd64,linux/arm64 -t myapp:latest --push .

    Build and push multi-arch image using BuildKit

  • Inspect image layers
    docker history --no-trunc <image>

    Show all layers with full commands and sizes

  • Export container filesystem
    docker export <container> | tar -tvf - | head -30

    Inspect a container's merged filesystem as a tar stream

all 46 docker commands