build multi-arch pooler image (#3077)

* build multi-arch pooler image
* add pooler build step in delivery.yaml and bump pooler version
* pull from docker hub not zalando registry
* add pooler step to ghcr workflow
* pass infra roles to auth file via pooler entrypoint
* introduce extra pooler secret for mounting auth_file
* use pbgouncer as image name and push to ghcr on next merge
* build with latest pgbouncer
* integrate new image in e2e process and update pooler image default
* update pooler build dependencies
* build pooler image for e2e test
* more Makefile and e2e run script tweaking

---------

Co-authored-by: Ida Novindasari <idanovinda@gmail.com>

.github/workflows/publish_ghcr_image.yaml

@@ -34,6 +34,12 @@ jobs:
             OPERATOR_IMAGE="${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}:${GITHUB_REF/refs\/tags\//}"
             echo "OPERATOR_IMAGE=$OPERATOR_IMAGE" >> $GITHUB_OUTPUT
 
+      - name: Define pooler image name
+        id: image_pooler
+        run: |
+            POOLER_IMAGE="${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}/pgbouncer:${GITHUB_REF/refs\/tags\//}"
+            echo "POOLER_IMAGE=$POOLER_IMAGE" >> $GITHUB_OUTPUT
+
       - name: Define UI image name
         id: image_ui
         run: |
@@ -69,6 +75,15 @@ jobs:
           tags: "${{ steps.image.outputs.OPERATOR_IMAGE }}"
           platforms: linux/amd64,linux/arm64
 
+      - name: Build and push multiarch pooler image to ghcr
+        uses: docker/build-push-action@v3
+        with:
+          context: pooler
+          push: true
+          build-args: BASE_IMAGE=alpine:3.22
+          tags: "${{ steps.image_pooler.outputs.POOLER_IMAGE }}"
+          platforms: linux/amd64,linux/arm64
+
       - name: Build and push multiarch ui image to ghcr
         uses: docker/build-push-action@v3
         with: