fix github action

Author: LightBlueCube

.github/workflows/build.yml

@@ -9,12 +9,20 @@ on:
 jobs:
   build:
     runs-on: ubuntu-latest
+
+    permissions:
+      actions: read
+      contents: read
+      packages: write
+
     steps:
       - name: Checkout repository
         uses: actions/checkout@v3
 
       - name: Generate tags
-        run: echo "IMG_TAG=${GITHUB_SHA::7}" >> $GITHUB_ENV
+        run: |
+          repo=${{ github.repository }};
+          echo "IMG_TAG=ghcr.io/${repo,,}/5k-dedi:${GITHUB_SHA::7}" >> $GITHUB_ENV
 
       - name: Set up Docker Buildx
         uses: docker/setup-buildx-action@v2
@@ -27,4 +35,8 @@ jobs:
           password: ${{secrets.GITHUB_TOKEN}}
 
       - name: Build Docker image
-        run: docker buildx build --push -t ghcr.io/${{ github.repository }}/5k-dedicated:${{ env.IMG_TAG }} .
+        uses: docker/build-push-action@v2
+        with:
+          context: .
+          push: true
+          tags: ${{ env.IMG_TAG }}