fix: ci (#76)

Author: dungngminh

.github/workflows/build_and_push_backend.yml

@@ -12,6 +12,10 @@ on:
     paths:
       - backend/**
 
+defaults:
+  run:
+    working-directory: /backend
+
 jobs:
   deploy:
     runs-on: ubuntu-latest
@@ -31,30 +35,3 @@ jobs:
 
       - name: Change Directory to build folder
         run: cd build/
-
-      # - name: Overwrite file
-      #   uses: "DamianReeves/write-file-action@master"
-      #   with:
-      #     path: nixpacks.toml
-      #     write-mode: overwrite
-      #     contents: |
-      #       [phases.setup]
-      #       nixpkgsArchive = 'bc901a14315f03cb02d5be6d7e4c8075cd0fe36c'
-
-      - name: Set up QEMU
-        uses: docker/setup-qemu-action@v2
-      - name: Set up Docker Buildx
-        uses: docker/setup-buildx-action@v2
-
-      - name: Login to Docker Hub
-        uses: docker/login-action@v2
-        with:
-          username: ${{ secrets.DOCKER_USERNAME }}
-          password: ${{ secrets.DOCKER_TOKEN }}
-
-      - name: Build and push
-        uses: docker/build-push-action@v4
-        with:
-          context: build/
-          push: true
-          tags: dungngminh/server:latest