Image built from Dockerfile.builder@36f7672 was pushed to both
docker-registry:5000 (internal) and docker-registry.silverlabs.uk
(external) under tags m1.1-bootstrap + latest. Both URLs serve the
same registry, so the manifest digest is identical:
sha256:cedef039425e0b0f5901c1023eda820c7aa38ab4b81c2bb1e12d64cadb3d6c85
Default points at the internal hostname for CI; external dev overrides
via BUILDER_IMAGE env var.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>