Add multi-arch manifest creation job for PostgreSQL images

Author: Miggets7

.github/workflows/postgresql.yml

@@ -65,9 +65,9 @@ jobs:
       - name: Set tags
         run: |
           if [ -z "$TAG" ]; then
-            echo "TAG=-t openremote/postgresql:develop" >> $GITHUB_ENV
+            echo "TAG=-t openremote/postgresql:develop-amd64" >> $GITHUB_ENV
           else
-            echo "TAG=-t openremote/postgresql:latest -t openremote/postgresql:$TAG" >> $GITHUB_ENV
+            echo "TAG=-t openremote/postgresql:$TAG-amd64" >> $GITHUB_ENV
           fi
         env:
           TAG: ${{ github.event.release.tag_name }}
@@ -144,9 +144,9 @@ jobs:
       - name: Set tags
         run: |
           if [ -z "$TAG" ]; then
-            echo "TAG=-t openremote/postgresql:develop" >> $GITHUB_ENV
+            echo "TAG=-t openremote/postgresql:develop-arm64" >> $GITHUB_ENV
           else
-            echo "TAG=-t openremote/postgresql:latest -t openremote/postgresql:$TAG" >> $GITHUB_ENV
+            echo "TAG=-t openremote/postgresql:$TAG-arm64" >> $GITHUB_ENV
           fi
         env:
           TAG: ${{ github.event.release.tag_name }}
@@ -180,3 +180,36 @@ jobs:
             --no-cache-filter trimmed \
             --no-cache-filter trimmed-all \
             $TAG .
+
+  create_manifest:
+    needs: [image_postgresql_amd64, image_postgresql_arm64]
+    runs-on: ubuntu-latest
+    
+    steps:
+      - name: Set tags
+        run: |
+          if [ -z "$TAG" ]; then
+            echo "TAG=openremote/postgresql:develop" >> $GITHUB_ENV
+            echo "TAG_AMD64=openremote/postgresql:develop-amd64" >> $GITHUB_ENV
+            echo "TAG_ARM64=openremote/postgresql:develop-arm64" >> $GITHUB_ENV
+          else
+            echo "TAG=openremote/postgresql:$TAG" >> $GITHUB_ENV
+            echo "TAG_LATEST=openremote/postgresql:latest" >> $GITHUB_ENV
+            echo "TAG_AMD64=openremote/postgresql:$TAG-amd64" >> $GITHUB_ENV
+            echo "TAG_ARM64=openremote/postgresql:$TAG-arm64" >> $GITHUB_ENV
+          fi
+        env:
+          TAG: ${{ github.event.release.tag_name }}
+          
+      - name: Login to DockerHub
+        uses: docker/login-action@5e57cd118135c172c3672efd75eb46360885c0ef
+        with:
+          username: ${{ secrets._TEMP_DOCKERHUB_USER }}
+          password: ${{ secrets._TEMP_DOCKERHUB_PASSWORD }}
+          
+      - name: Create and push multi-arch manifest
+        run: |
+          docker buildx imagetools create -t $TAG $TAG_AMD64 $TAG_ARM64
+          if [ ! -z "$TAG_LATEST" ]; then
+            docker buildx imagetools create -t $TAG_LATEST $TAG_AMD64 $TAG_ARM64
+          fi