Set context for docker build to root directory.

Author: lmarini

.github/workflows/backend.yaml

@@ -85,7 +85,7 @@ jobs:
         name: Build and push
         uses: docker/build-push-action@v3
         with:
-          context: ./backend
+          context: .
           platforms: linux/amd64,linux/arm64
           push: ${{ github.event_name != 'pull_request' }}
           tags: ${{ steps.backendMeta.outputs.tags }}
@@ -95,7 +95,7 @@ jobs:
         name: Build and push
         uses: docker/build-push-action@v3
         with:
-          context: ./backend
+          context: .
           platforms: linux/amd64,linux/arm64
           push: ${{ github.event_name != 'pull_request' }}
           tags: ${{ steps.heartbeatMeta.outputs.tags }}
@@ -106,7 +106,7 @@ jobs:
         name: Build and push
         uses: docker/build-push-action@v3
         with:
-          context: ./backend
+          context: .
           platforms: linux/amd64,linux/arm64
           push: ${{ github.event_name != 'pull_request' }}
           tags: ${{ steps.messagesMeta.outputs.tags }}