ci: add multi-platform pg image build workflow steps

.github/workflows/dev-db-pgtest.yml

@@ -5,8 +5,8 @@ on:
   workflow_dispatch:
 
 jobs:
-  build-pg:
-    name: Build PostgreSQL Docker Images
+  migrate:
+    name: Migrate MySQL to PostgreSQL DB
     runs-on: ubuntu-latest
     container: ghcr.io/ietf-tools/datatracker-app-base:latest
     permissions:
@@ -32,32 +32,59 @@ jobs:
           POSTGRES_DB: ietf
           POSTGRES_HOST_AUTH_METHOD: trust
     steps:
-      - uses: actions/checkout@v3
-        with:
-          ref: 'feat/postgres'
-
-      - name: Set up QEMU
-        uses: docker/setup-qemu-action@v2
-
-      - name: Set up Docker Buildx
-        uses: docker/setup-buildx-action@v2
-
-      - name: Login to GitHub Container Registry
-        uses: docker/login-action@v2
-        with:
-          registry: ghcr.io
-          username: ${{ github.actor }}
-          password: ${{ secrets.GITHUB_TOKEN }}
+    - uses: actions/checkout@v3
+      with:
+        ref: 'feat/postgres'
+          
+    - name: Migrate
+      run: |
+        chmod +x ./docker/scripts/db-pg-migrate.sh
+        sh ./docker/scripts/db-pg-migrate.sh
+          
+    - name: Upload DB Dump
+      uses: actions/upload-artifact@v3
+      with:
+        name: dump
+        path: ietf.dump
+          
+  build:
+    name: Build PostgreSQL Docker Images
+    runs-on: ubuntu-latest
+    
+    steps:
+    - uses: actions/checkout@v3
+      with:
+        ref: 'feat/postgres'
+        
+    - name: Download DB Dump
+      uses: actions/download-artifact@v3.0.0
+      with:
+        name: dump
+        
+    - name: Get Current Date as Tag
+      id: date
+      run: echo "date=$(date +'%Y%m%d')" >> $GITHUB_OUTPUT
+
+    - name: Set up QEMU
+      uses: docker/setup-qemu-action@v2
+
+    - name: Set up Docker Buildx
+      uses: docker/setup-buildx-action@v2
+
+    - name: Login to GitHub Container Registry
+      uses: docker/login-action@v2
+      with:
+        registry: ghcr.io
+        username: ${{ github.actor }}
+        password: ${{ secrets.GITHUB_TOKEN }}
+
+    - name: Docker Build & Push
+      uses: docker/build-push-action@v3
+      with:
+        context: .
+        file: docker/db-pg.Dockerfile
+        platforms: linux/amd64,linux/arm64
+        push: true
+        tags: ghcr.io/ietf-tools/datatracker-db-pg:latest,ghcr.io/ietf-tools/datatracker-db-pg:nightly-${{ steps.date.outputs.date }}
+          
           
-      - name: Migrate
-        run: |
-          chmod +x ./docker/scripts/db-pg-migrate.sh
-          sh ./docker/scripts/db-pg-migrate.sh
-      - name: Docker Build & Push
-        uses: docker/build-push-action@v3
-        with:
-          context: .
-          file: docker/db-pg.Dockerfile
-          platforms: linux/amd64
-          push: true
-          tags: ghcr.io/ietf-tools/datatracker-db-pg:latest