refactor: dynamically detect images for OpenShift import

- Remove hardcoded image matrix
- Auto-detect all directories with Containerfile
- Add --confirm flag to create ImageStream if missing

Author: xnoto

.github/workflows/pull.yml

@@ -11,13 +11,28 @@ permissions:
   contents: read
 
 jobs:
-  import:
+  detect:
     runs-on: ubuntu-latest
     if: ${{ github.event.workflow_run.conclusion == 'success' }}
+    outputs:
+      images: ${{ steps.find.outputs.images }}
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Find all images
+        id: find
+        run: |
+          images=$(find . -maxdepth 2 -name Containerfile | cut -d'/' -f2 | jq -R -s -c 'split("\n") | map(select(length > 0))')
+          echo "images=$images" >> "$GITHUB_OUTPUT"
+
+  import:
+    needs: detect
+    if: needs.detect.outputs.images != '[]'
+    runs-on: ubuntu-latest
     strategy:
       matrix:
-        image:
-          - runner
+        image: ${{ fromJson(needs.detect.outputs.images) }}
 
     steps:
       - name: Connect to Cloudflare WARP
@@ -38,4 +53,4 @@ jobs:
           insecure_skip_tls_verify: true
 
       - name: Import image to OpenShift
-        run: oc import-image ${{ matrix.image }} -n public-registry
+        run: oc import-image ${{ matrix.image }} -n public-registry --confirm