Diff container from image

Files added (A), changed (C), or deleted (D) in a running container

docker diff <container>
tool
docker46 commands
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dockerdebug

More docker commands

  • Commit container to image
    docker commit -m 'debug snapshot' <container> debug-snapshot:$(date +%s)

    Snapshot a running container's filesystem as an image

  • Run with resource limits
    docker run --memory=512m --cpus=0.5 --oom-kill-disable=false myapp

    Limit container to 512MB RAM and half a CPU core

  • Show container resource usage
    docker stats --no-stream --format 'table {{.Name}}\t{{.CPUPerc}}\t{{.MemUsage}}'

    One-shot CPU and memory snapshot for all containers

  • Remove dangling images
    docker image prune -f

    Remove all <none>:<none> dangling images

  • Remove everything unused
    docker system prune -a --volumes -f

    Remove stopped containers, unused images, networks, volumes

all 46 docker commands