ci: push operator image in a separate job

Define the push also in a separate job as the build. In order to
reference the same image, also in this stage it needs to be loaded by
the tarball created at the previous stage.

Assisted-by: AI
Signed-off-by: Alice Frosi <afrosi@redhat.com>

Author: alicefr

.github/workflows/ci.yaml

@@ -111,8 +111,6 @@ jobs:
     timeout-minutes: 30
     permissions:
       contents: read
-    env:
-      IMAGE: ghcr.io/${{ github.repository }}
     steps:
       - name: Checkout
         uses: actions/checkout@9c091bb21b7c1c1d1991bb908d89e4e9dddfe3e0 # v7.0.0
@@ -188,8 +186,25 @@ jobs:
           path: _output/logs/
           if-no-files-found: ignore
 
+  push:
+    if: github.event_name == 'push'
+    runs-on: ubuntu-latest
+    needs: e2e
+    permissions:
+      contents: read
+      packages: write
+    env:
+      IMAGE: ghcr.io/${{ github.repository }}
+    steps:
+      - name: Download operator image
+        uses: actions/download-artifact@3e5f45b2cfb9172054b4087a40e8e0b5a5461e7c # v8.0.1
+        with:
+          name: operator-image
+
+      - name: Load operator image
+        run: podman load -i operator-image.tar
+
       - name: Push to GHCR
-        if: github.event_name == 'push'
         env:
           ACTOR: ${{ github.actor }}
           GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}