chore(ci): add image pull with retry (#508)

The addresses spurious failures of pulling our (very large) base images by pre-pulling them to the build runner before using the buildah action.

Relates: #502

.github/workflows/build.yml

@@ -174,6 +174,16 @@ jobs:
             io.artifacthub.package.readme-url=https://raw.githubusercontent.com/${{ github.repository }}/main/README.md
             io.artifacthub.package.logo-url=https://avatars.githubusercontent.com/u/120078124?s=200&v=4
 
+      - name: Pull base image
+        uses: Wandalen/[email protected]
+        with:
+          attempt_limit: 3
+          attempt_delay: 15000
+          command: |
+            # pull the base image used for FROM in containerfile so
+            # we can retry on that unfortunately common failure case
+            podman pull quay.io/${{ env.SOURCE_ORG }}/${{ env.SOURCE_IMAGE }}:${{ matrix.major_version }}
+
       # Build image using Buildah action
       - name: Build Image
         id: build_image