Added working directory to build step

.gitea/workflows/DRBv3_tests.yaml

@@ -32,15 +32,13 @@ jobs:
       - name: Checkout
         uses: actions/checkout@v4
 
-      - name: Move to server dir
-        run: cd "./server"
-
       - name: Set up Docker Buildx
         uses: docker/setup-buildx-action@v3
 
       - name: Build        
         uses: docker/build-push-action@v5        
         with:
+          working-directory: './server'
           context: .
           load: true
           tags: drb-server:latest