fix: use Dockerfile dev stage instead of missing Dockerfile.dev in CI

Author: ravisuhag

.github/workflows/main.yml

@@ -35,7 +35,8 @@ jobs:
         uses: docker/build-push-action@v7
         with:
           push: true
-          file: "./Dockerfile.dev"
+          file: "./Dockerfile"
+          target: dev
           tags: raystack/compass:dev
           cache-from: type=gha
           cache-to: type=gha,mode=max