fix: publish test components to OCI registry before running OCI tests

Add setup step to build and publish greeting and calculator components to the
local registry before attempting to pull them in OCI composition tests.
This resolves 'manifest unknown' errors by ensuring components exist in registry.

Author: avrabe

.github/workflows/ci.yml

@@ -82,6 +82,18 @@ jobs:
       - name: Verify Bazel Installation
         run: bazel version
 
+      - name: Setup OCI Registry with Test Components
+        run: |
+          # Build and publish test components to local registry for OCI tests
+          echo "Publishing test components to localhost:5001 registry..."
+          bazel run //examples/simple_oci_test:publish_greeting
+          bazel run //examples/simple_oci_test:publish_calculator
+          
+          # Verify components are available
+          echo "Verifying registry contents..."
+          curl -s http://localhost:5001/v2/_catalog || echo "Registry catalog request failed"
+          curl -s http://localhost:5001/v2/test/simple/greeting/tags/list || echo "Greeting tags request failed"
+
       - name: Build All Targets
         run: |
           # Build core working targets, exclude incomplete/problematic examples