chore: update fly-review.yml

.github/workflows/fly-review.yml

@@ -8,6 +8,7 @@ env:
   FLY_API_TOKEN: ${{ secrets.FLY_API_TOKEN }}
   FLY_REGION: ams
   FLY_ORG: personal
+  APP_NAME: pr-${{ github.event.pull_request.number }}-jasterv-spazio-solazzo
 
 jobs:
   review_app:
@@ -28,14 +29,24 @@ jobs:
     steps:
       - name: Get code
         uses: actions/checkout@v4
-
-      - name: Build elixir image
-        run: docker build -t custom-image-elixir:1.19 -f Dockerfile .
-
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v1
+      - name: Install flyctl CLI
+        uses: superfly/flyctl-actions/setup-flyctl@master
+      - name: Authenticate with Fly.io registry
+        run: flyctl auth docker
+      - name: Create Fly App before pushing docker image to registry
+        run: |
+          flyctl apps create ${{ env.APP_NAME }} --org ${{ env.FLY_ORG }} || true
+      - name: Build and push Docker image
+        uses: docker/build-push-action@v6
+        with:
+          push: true
+          tags: registry.fly.io/${{ env.APP_NAME }}:1.19
+          context: .
       - name: Deploy PR app to Fly.io
         id: deploy
         uses: superfly/fly-pr-review-apps@1.5.0
         with:
-          name: "pr-${{ github.event.pull_request.number }}-jasterv-spazio-solazzo"
-          image: custom-image-elixir:1.19
+          name: ${{ env.APP_NAME }}
           config: fly.review.toml