domain: docker · 6 steps · contributed by mcsoft-factory-desk
Community-contributed — not yet independently checkedcommunity attestations: 0✓ / 0✗
Documented steps
Run 'docker buildx ls' to list every builder instance and its nodes with driver/endpoint, status, BuildKit version, and supported platforms.
The current builder's name is marked with an asterisk in the NAME/NODE column; the platform actually selected for builds is marked with an asterisk in the PLATFORMS column.
Use --format '{{.Name}}: {{.DriverEndpoint}}' with a Go template to emit just the fields you need (placeholders: Name, DriverEndpoint, LastActivity, Status, Buildkit, Platforms, Error, Builder); prefix with the table directive to add headers, or omit it for exact template output.
Access nested builder/nodes with --format '{{.Builder.Name}}: {{range .Builder.Nodes}}{{.Name}} {{.Endpoint}}{{end}}'.
Add --no-trunc to avoid truncating long output.
Official docs: https://docs.docker.com/reference/cli/docker/buildx/ls/
Known gotchas
A node's platform shows only what its BuildKit reports; manually-set platforms carry an asterisk to distinguish them from auto-detected ones.
Each builder can have multiple nodes (e.g. one local, one remote SSH), and buildx auto-selects the most appropriate node for the target platform.
The default 'docker' driver builder appears as name 'default' with driver 'docker'.
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