nix docker image

.github/workflows/ci.yaml

@@ -49,7 +49,7 @@ jobs:
       - uses: Swatinem/rust-cache@v1
       - uses: lriesebos/nix-develop-command@6f5f4830884d1957767e920c51d6118c9b0ac828
         with:
-          command: "cargo clippy -D warnings"
+          command: "cargo clippy -- -D warnings"
 
   build:
     name: Build
@@ -62,4 +62,21 @@ jobs:
           name: ci
           instance: https://cache.icewind.me
           authToken: '${{ secrets.ATTIC_TOKEN }}'
-      - run: nix build .#${{ matrix.target }}
+      - run: nix build .#${{ matrix.target }}
+
+  docker:
+    runs-on: ubuntu-latest
+    needs: build
+    steps:
+      - uses: actions/checkout@v3
+      - uses: cachix/install-nix-action@v20
+      - uses: icewind1991/attic-action@v1
+        with:
+          name: ci
+          instance: https://cache.icewind.me
+          authToken: '${{ secrets.ATTIC_TOKEN }}'
+      - run: nix build .#dockerImage
+      - name: Push image
+        if: github.ref == 'refs/heads/main'
+        run: |
+          skopeo copy --dest-creds="${{ secrets.DOCKERHUB_USERNAME }}:${{ secrets.DOCKERHUB_TOKEN }}" "docker-archive:$(nix build .#dockerImage --print-out-paths)" "docker://demostf/backup"