bash
docker buildx versionNotes
Useful to confirm feature availability.
Docker Buildx Cheat Sheet
Modern BuildKit and Buildx reference for multi-platform builds, cache, secrets, and remote outputs.
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Buildx Basics
Modern BuildKit-powered multi-platform build workflows.
bash
docker buildx lsNotes
Helpful for checking which builder is active and what it can build.
bash
docker buildx create --name multiarch --useNotes
Common first step for multi-platform builds.
bash
docker buildx inspect --bootstrapNotes
Shows driver, nodes, and platform support.
bash
docker buildx use multiarchNotes
Useful when you maintain separate local and CI builders.
bash
docker buildx rm multiarchNotes
Cleanup after experiments or when rotating build nodes.
Buildx Build Workflows
Multi-platform builds, outputs, caching, and provenance.
bash
docker buildx build -t ghcr.io/acme/myapp:dev .Notes
This is the modern build command for advanced workflows.
Build and load into local daemon
Build and load the result into the local Docker image store.
bashANYbuildxbuildlocal
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docker buildx build --load -t myapp:dev .Notes
Useful for single-platform local testing.
bash
docker buildx build --push -t ghcr.io/acme/myapp:1.0.0 .Notes
Common in CI where the local daemon store is not needed.
bash
docker buildx build --platform linux/amd64,linux/arm64 --push -t ghcr.io/acme/myapp:1.0.0 .Notes
Clients pull the matching platform automatically.
bash
docker buildx build --target build --load -t myapp:build .Notes
Useful with multi-stage Dockerfiles and advanced builders.
bash
docker buildx build --cache-from type=registry,ref=ghcr.io/acme/myapp:cache --cache-to type=registry,ref=ghcr.io/acme/myapp:cache,mode=max --push -t ghcr.io/acme/myapp:1.0.0 .Notes
Very effective for repeat builds across runners.
Pass build secret
Pass a secret into the build without baking it into layers.
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docker buildx build --secret id=npmrc,src=$HOME/.npmrc -t myapp:dev .Notes
A best practice for private package registries.
Forward SSH agent during build
Forward SSH credentials into the build for private Git access.
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docker buildx build --ssh default -t myapp:dev .Notes
Useful when a build clones private repositories.
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docker buildx bakeNotes
Useful for orchestrating multiple targets and shared settings.
Inspect remote image platforms
Inspect remote image index details and available platforms.
bashANYbuildximagetoolsmultiarch
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docker buildx imagetools inspect ghcr.io/acme/myapp:1.0.0Notes
Excellent for verifying multi-platform publishing.
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