Create a docker release github action (#54)

* create docker release action

* .

* .

* .

* .

* .

* .

* .

* .

* .

* .

* .

* .

* .

* .

* .

* .

* .

* .

* .

* .

* .

.github/workflows/docker.yml

@@ -0,0 +1,37 @@
+# Publishes the Docker image.
+
+name: docker
+
+on:
+  push:
+    tags:
+      - v*
+
+env:
+  IMAGE_NAME: ${{ github.repository_owner }}/nanoreth
+  CARGO_TERM_COLOR: always
+  DOCKER_IMAGE_NAME: ghcr.io/${{ github.repository_owner }}/nanoreth
+  DOCKER_USERNAME: ${{ github.actor }}
+
+jobs:
+    build:
+      name: build and push as latest
+      runs-on: ubuntu-24.04
+      permissions:
+        packages: write
+        contents: read
+      steps:
+       - uses: actions/checkout@v5
+       - uses: rui314/setup-mold@v1
+       - uses: dtolnay/rust-toolchain@stable
+       - uses: Swatinem/rust-cache@v2
+         with:
+           cache-on-failure: true
+       - name: Log in to Docker
+         run: |
+           echo "${{ secrets.GITHUB_TOKEN }}" | docker login ghcr.io --username ${DOCKER_USERNAME} --password-stdin
+       - name: Set up Docker builder
+         run: |
+           docker buildx create --use --name builder
+       - name: Build and push nanoreth image
+         run: make IMAGE_NAME=$IMAGE_NAME DOCKER_IMAGE_NAME=$DOCKER_IMAGE_NAME PROFILE=maxperf docker-build-push-latest