Updated build-push workflow to push to ghcr and to use buildx to buil…

…d an amd64 and arm64 image

.github/workflows/docker-image.yml

@@ -1,12 +1,19 @@
-name: Docker Image CI
+name: Build and push to registry
 
 on:
   push:
     branches: [ "main" ]
+  pull_request: 
+    branches: [ "main" ]
+  workflow_dispatch:
+
+permissions: 
+  packages: write 
+  contents: read
 
 jobs:
   build-and-push:
-    name: Build Docker image and push to repository
+    name: Build Docker image and push to registry
     runs-on: ubuntu-latest
 
     steps:
@@ -17,17 +24,36 @@ jobs:
         id: buildx
         uses: docker/setup-buildx-action@v2
 
-      - name: Login to repository
+      - name: Login to GitHub's Container Registry
+        if: github.event_name != 'pull_request'
         uses: docker/login-action@v2
         with:
-          registry: ${{ secrets.REGISTRY_URL }}
-          username: ${{ secrets.REGISTRY_USERNAME }}
-          password: ${{ secrets.REGISTRY_PASSWORD }}
+          registry: ghcr.io
+          username: ${{ github.repository_owner }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Generate image metadata
+        id: spoticord-database # used in next step
+        uses: docker/metadata-action@v5
+        with:
+          # list of Docker images to use as base name for tags
+          images: ghcr.io/${{ github.event.repository.name }}
+          # Docker tags based on the following events/attributes
+          tags: |
+            type=raw,value=latest,enable={{is_default_branch}}
+            type=ref,event=branch
+            type=ref,event=pr
+            type=sha
         
       - name: Build image and push to registry
-        uses: docker/build-push-action@v2
+        uses: docker/build-push-action@v5
         with:
           context: .
-          tags: |
-            ${{ secrets.REGISTRY_URL }}/spoticord/database:latest
-          push: ${{ github.ref == 'refs/heads/main' }}
+          platforms: linux/amd64,linux/arm64
+          push: ${{ github.event_name != 'pull_request' }}
+          tags: ${{ steps.spoticord-database.outputs.tags }}
+          labels: ${{ steps.spoticord-database.outputs.labels }}
+          # Some basic caching of the layers...
+          cache-from: ghcr.io/${{ github.event.repository.name }}:latest-cache
+          cache-to: ghcr.io/${{ github.event.repository.name }}:latest-cache
+