Redis: semver selection

Shows how {major}.{minor} aliases track the highest patch within each minor stream, and latest tracks the highest overall. Redis layers are larger than busybox, so the first copy takes a little longer.

docs/examples/redis/redis.yml

# Semver selection over a real image. Shows how aliases track versions:
#   {major}.{minor} → the highest patch within each minor (e.g. 7.2 → 7.2.z)
#   latest          → the highest version overall
# Redis layers are larger than busybox, so the first copy takes a little longer.
#
# Heavier variant — drop it into the same dir and reconcile, or point houba at a
# single file's directory.
#
apiVersion: houba.io/v1alpha1
kind: MirrorPolicy
metadata:
  name: redis
spec:
  artifactType: image
  source:
    registry: docker.io
    repository: library/redis
  imports:
    - name: v7
      owners:
        - group:default/data-platform     # stamped as io.houba.owners
      tags:
        includeRegex: "^7\\.2\\."       # just the 7.2.x line, to keep the demo quick
        # semverOnly is true by default → non-semver tags (e.g. "latest", "alpine") are dropped
        aliases:
          - "{major}.{minor}"           # 7.2 → highest 7.2.z
          - "latest"                    # → highest selected
      destinations:
        - project: demo
          repository: redis

Run it: uv run houba reconcile docs/examples/redis