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The initial vcontainer distro had no BBMASK at all, making it
effectively poky with fewer DISTRO_FEATURES. Every multiconfig parsed
the entire recipe universe even though container image builds only
need a small subset. With 4+ multiconfigs, the parse overhead is
significant.
Add vcontainer-bbmask.inc as a lighter alternative to vruntime's
aggressive BBMASK. It masks the same categories irrelevant to any
container/VM build (graphics, multimedia, desktop, virtualization
platforms, orchestration tools, meta-python, meta-filesystems,
meta-webserver) but keeps the OCI tooling that vruntime blocks:
umoci, container-registry, image recipes, sloci, oci-image-tools.
Masking entire layers (meta-python, meta-filesystems, meta-webserver)
produces BBFILE_PATTERN warnings because the layers are registered in
bblayers.conf (shared with the main build) but have zero recipes after
masking. BitBake provides BBFILE_PATTERN_IGNORE_EMPTY_<collection>
to suppress this, but checks it on self.data (the base datastore),
not per-multiconfig datastores. Setting it in the distro config has
no effect. Move the suppression to meta-virt-host.conf which is
included by the main build's local.conf and therefore visible to
the base datastore.
Signed-off-by: Bruce Ashfield <bruce.ashfield@gmail.com>
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The registry push script (container-registry-index.bb) treated all OCI
directories as single-arch, calling 'skopeo copy oci:<dir>' which fails
with "more than one image in oci, choose an image" when the directory
contains a multi-arch image index. The original push implementation
predated multi-arch OCI support and only handled the single-manifest
case.
Detect multi-arch OCI Image Index directories (both flat and nested
layouts) in the direct-path push mode and use 'skopeo copy --all' to
push the entire manifest list to the registry in one operation. This
preserves the multi-platform structure so that clients pulling from the
registry automatically get the correct architecture.
Also strip the '-multiarch' suffix from directory names when deriving
the registry image name, so container-base-multiarch-multiarch-oci
pushes as 'container-base' rather than 'container-base-multiarch'.
Add build-profiles.md documentation for the vcontainer distro, container
multiconfigs, and multi-arch container build workflow.
Add test_vcontainer_distro.py with 54 tests across three tiers:
- Tier 1: Static file assertions (vruntime-base.inc, vcontainer.conf,
multiconfigs, bbclass defaults, recipe structure)
- Tier 2: Cross-file consistency (shared base, distro-MC alignment,
bbclass-to-multiconfig file matching)
- Tier 3: Build output verification (OCI index structure, platform
entries, blob integrity, manifest validation)
Signed-off-by: Bruce Ashfield <bruce.ashfield@gmail.com>
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