.github/workflows/docker: need to checkout repo

Author: classabbyamp

.github/workflows/docker.yml

@@ -9,18 +9,12 @@ jobs:
   main:
     runs-on: ubuntu-latest
     steps:
-      - name: Set up QEMU
-        uses: docker/setup-qemu-action@v1
-      - name: Set up Docker Buildx
-        uses: docker/setup-buildx-action@v1
-      - name: Login to GCHR
-        uses: docker/login-action@v1
-        with:
-          registry: ghcr.io
-          username: void-robot
-          password: ${{ secrets.CR_PAT }}
       - name: Set version
         run: echo "RELEASE_VERSION=${GITHUB_REF#refs/*/}" >> $GITHUB_ENV
+
+      - name: Checkout repo
+        uses: classabbyamp/treeless-checkout-action@v1
+
       - name: Docker metadata
         id: meta
         uses: docker/metadata-action@v4