chore: remove checkout in favor of gha caching

.github/workflows/nightly.yml

@@ -38,18 +38,6 @@ jobs:
     runs-on: depot-ubuntu-24.04-arm
 
     steps:
-      - uses: actions/checkout@v5
-        with:
-          ref: refs/heads/master # force master
-          fetch-depth: 0
-
-      - name: Get dist from cache
-        uses: actions/cache/restore@v4
-        id: cache-dist
-        with:
-          path: dist
-          key: ${{ runner.os }}-${{ github.sha }}-dist
-
       - name: Login
         uses: docker/login-action@v3
         with:
@@ -71,7 +59,6 @@ jobs:
       - name: Publish
         uses: docker/build-push-action@v6
         with:
-          context: .
           platforms: linux/amd64,linux/arm64,linux/arm/v6
           push: true
           tags: ${{ steps.meta.outputs.tags }}