container-registry: add management commands and documentation

Registry management commands:
- delete <image>:<tag>: Remove tagged images from registry
- gc: Garbage collection with dry-run preview and confirmation
- push <image> --tag: Explicit tags now require image name
  (prevents accidentally tagging all images with same version)

Config improvements:
- Copy config to storage directory with baked-in storage path
- Fixes gc which reads config directly (not via env var)
- All registry files now in ${TOPDIR}/container-registry/

Documentation:
- Development Loop workflow (build, push, pull, test)
- Build-time OCI labels (revision, branch, created)
- Complete command reference

Signed-off-by: Bruce Ashfield <bruce.ashfield@gmail.com>

1 files changed, 3 insertions, 0 deletions

diff --git a/recipes-containers/container-registry/files/container-registry-dev.yml b/recipes-containers/container-registry/files/container-registry-dev.yml
index ed0a7c88..80e5296c 100644
--- a/recipes-containers/container-registry/files/container-registry-dev.yml
+++ b/recipes-containers/container-registry/files/container-registry-dev.yml
@@ -33,6 +33,9 @@ storage:
   filesystem:
     # Storage directory - override with REGISTRY_STORAGE_FILESYSTEM_ROOTDIRECTORY env var
     rootdirectory: /tmp/container-registry
+  # Enable deletion of images/tags
+  delete:
+    enabled: true
   # Don't redirect to external storage
   redirect:
     disable: true