multi-arch build docker images (#141)

.github/workflows/publish-docker.yml

@@ -23,6 +23,15 @@ jobs:
     steps:
       - name: Checkout repository
         uses: actions/checkout@v4
+
+        # Add support for more platforms with QEMU (optional)
+        # https://github.com/docker/setup-qemu-action
+      - name: Set up QEMU
+        uses: docker/setup-qemu-action@v3
+
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v3
+      
       # Uses the `docker/login-action` action to log in to the Container registry registry using the account and password that will publish the packages. Once published, the packages are scoped to the account defined here.
       - name: Log in to the Container registry
         uses: docker/login-action@65b78e6e13532edd9afa3aa52ac7964289d1a9c1
@@ -30,18 +39,21 @@ jobs:
           registry: ${{ env.REGISTRY }}
           username: ${{ github.actor }}
           password: ${{ secrets.GITHUB_TOKEN }}
+
       # This step uses [docker/metadata-action](https://github.com/docker/metadata-action#about) to extract tags and labels that will be applied to the specified image. The `id` "meta" allows the output of this step to be referenced in a subsequent step. The `images` value provides the base name for the tags and labels.
       - name: Extract metadata (tags, labels) for Docker
         id: meta
         uses: docker/metadata-action@9ec57ed1fcdbf14dcef7dfbe97b2010124a938b7
         with:
           images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}
+      
       # This step uses the `docker/build-push-action` action to build the image, based on your repository's `Dockerfile`. If the build succeeds, it pushes the image to GitHub Packages.
       # It uses the `context` parameter to define the build's context as the set of files located in the specified path. For more information, see "[Usage](https://github.com/docker/build-push-action#usage)" in the README of the `docker/build-push-action` repository.
       # It uses the `tags` and `labels` parameters to tag and label the image with the output from the "meta" step.
       - name: Build and push Docker image
         uses: docker/build-push-action@f2a1d5e99d037542a71f64918e516c093c6f3fc4
         with:
+          platforms: linux/amd64,linux/arm64
           context: .
           push: true
           tags: ${{ steps.meta.outputs.tags }}

Dockerfile

@@ -5,7 +5,7 @@ FROM rust:latest AS builder
 
 WORKDIR /worker
 COPY ./ .
-RUN cargo build --release --target x86_64-unknown-linux-gnu
+RUN cargo build --release
 
 
 ####################################################################################################
@@ -15,6 +15,6 @@ FROM ubuntu:latest
 
 RUN apt update && apt install -y iproute2 && apt clean all
 
-COPY --from=builder /worker/target/x86_64-unknown-linux-gnu/release/tun2proxy /usr/bin/tun2proxy
+COPY --from=builder /worker/target/release/tun2proxy /usr/bin/tun2proxy
 
 ENTRYPOINT ["/usr/bin/tun2proxy", "--setup"]