consolidate server github workflows to avoid race

.github/workflows/server-charm-release-edge.yml

@@ -8,20 +8,61 @@ on:
       - server/**
   workflow_dispatch:
 
+env:
+  REGISTRY: ghcr.io
+
 jobs:
-  build:
+  build-and-push-backend-image:
+    runs-on: [self-hosted, linux, X64]
+    permissions:
+      contents: read
+      packages: write
+
+    env:
+      IMAGE_NAME: ${{ github.repository }}
+
+    steps:
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v3
+        with:
+          config-inline: |
+            [registry."docker.io"]
+              mirrors = ["https://github-runner-dockerhub-cache.canonical.com:5000"]
+
+      - name: Checkout repository
+        uses: actions/checkout@v3
+
+      - name: Log in to the Container registry
+        uses: docker/login-action@65b78e6e13532edd9afa3aa52ac7964289d1a9c1
+        with:
+          registry: ${{ env.REGISTRY }}
+          username: ${{ github.actor }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Extract metadata (tags, labels) for Docker
+        id: meta
+        uses: docker/metadata-action@9ec57ed1fcdbf14dcef7dfbe97b2010124a938b7
+        with:
+          images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}
+
+      - name: Build and push backend Docker image
+        uses: docker/build-push-action@f2a1d5e99d037542a71f64918e516c093c6f3fc4
+        with:
+          context: ./server
+          push: true
+          tags: ${{ steps.meta.outputs.tags }}
+          labels: ${{ steps.meta.outputs.labels }}
+
+  build-and-push-charm:
     name: Release to Charmhub
     runs-on: [self-hosted, linux, X64]
     steps:
       - name: Checkout
         uses: actions/checkout@v2
-        with:
-          fetch-depth: 0
       - name: Upload charm to charmhub
         uses: canonical/charming-actions/[email protected]
         with:
           charm-path: server/charm
           credentials: "${{ secrets.CHARMHUB_TOKEN }}"
           github-token: "${{ secrets.GITHUB_TOKEN }}"
-          upload-image: "true"
           channel: "latest/edge"