Save and load image

Export image to archive and reimport on another host

docker save myapp:1.0 | gzip > myapp.tar.gz && docker load < myapp.tar.gz
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docker46 commands
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docker

More docker commands

  • Healthcheck in Dockerfile
    HEALTHCHECK --interval=10s --timeout=3s --retries=3 CMD curl -sf http://localhost:8080/health || exit 1

    Native Docker healthcheck with curl (add to Dockerfile)

  • Docker scout vulnerabilities
    docker scout cves --only-fixed myapp:latest

    Show only CVEs that already have a fix available

  • Run temporary debug container
    docker run --rm -it --pid=host --network=host --privileged nicolaka/netshoot

    Full-featured network debug container sharing host PID and network

  • Build matrix from bake file
    docker buildx bake -f docker-bake.hcl --push

    Build/push multiple targets from one HCL file; parallel, DRY group definitions

  • Inspect multi-arch manifest
    docker buildx imagetools inspect <reg>/<name>:tag --format '{{json .Manifest}}'

    Show platforms in a manifest list without pulling layers; verify arm64+amd64

all 46 docker commands