Updated github workflow

.github/workflows/release.yml

@@ -8,12 +8,18 @@ jobs:
   build:
     runs-on: ubuntu-latest
     steps:
-      - name: Check out repository
-        uses: actions/checkout@v3
-
-      - name: Set up Docker Buildx
-        uses: docker/setup-buildx-action@v2
-
-      - name: Build Docker image
-        run: |
-          docker build -t ulinkshortener .
+      - uses: actions/checkout@v3
+      
+      - name: Log in to GHCR
+        uses: docker/login-action@v2
+        with:
+          registry: ghcr.io
+          username: ${{ github.actor }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+          
+      - name: Build and push
+        uses: docker/build-push-action@v4
+        with:
+          context: .
+          push: true
+          tags: ghcr.io/${{ github.repository_owner }}/ulinkshortener:latest