| ensure_buildx_builder | R Documentation |
Idempotent across repeated runs and cross-platform (Windows/macOS/Linux).
Probes for an existing builder via docker buildx inspect; creates it
only when missing; bootstraps it so it is ready to build. A docker-container
driver is required for multi-platform (linux/amd64,linux/arm64)
builds. Does not mutate the user's default buildx context (no --use);
the build pins the builder explicitly via --builder.
ensure_buildx_builder(builder_name = "starburst-builder")
builder_name |
Name of the buildx builder (default "starburst-builder") |
Returns TRUE if the named builder is usable, FALSE otherwise, and never
throws – callers decide policy. This fixes the failure mode where
buildx create errored on an already-existing builder, the error was
swallowed, and the subsequent buildx build failed with "existing
instance for <name> but no append mode" (GitHub #24).
TRUE if the named builder is usable, FALSE otherwise
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