ci: add test pg build workflow

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

@@ -0,0 +1,54 @@
+name: Dev PG DB Test
+
+on:
+  # Allows you to run this workflow manually from the Actions tab
+  workflow_dispatch:
+
+jobs:
+  build-pg:
+    name: Build PostgreSQL Docker Images
+    runs-on: ubuntu-latest
+    container: ghcr.io/ietf-tools/datatracker-app-base:latest
+    permissions:
+      contents: read
+      packages: write
+    services:
+      db:
+        image: ghcr.io/ietf-tools/datatracker-db:latest
+        volumes:
+            - mariadb-data:/var/lib/mysql
+        env:
+            MYSQL_ROOT_PASSWORD: ietf
+            MYSQL_DATABASE: ietf_utf8
+            MYSQL_USER: django
+            MYSQL_PASSWORD: RkTkDPFnKpko
+    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 }}
+          
+      - 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