build image based on alpine/musl (#212)

.github/workflows/publish-docker.yml

@@ -50,11 +50,22 @@ jobs:
       # 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
+      - name: Build gnu and push Docker image
         uses: docker/build-push-action@f2a1d5e99d037542a71f64918e516c093c6f3fc4
         with:
           platforms: linux/amd64,linux/arm64
           context: .
+          file: Dockerfile.ubuntu
           push: true
-          tags: ${{ steps.meta.outputs.tags }}
+          tags: ${{ steps.meta.outputs.tags }}-ubuntu
           labels: ${{ steps.meta.outputs.labels }}
+      
+      - name: Build musl and push Docker image
+        uses: docker/build-push-action@f2a1d5e99d037542a71f64918e516c093c6f3fc4
+        with:
+          platforms: linux/amd64
+          context: .
+          file: Dockerfile.alpine
+          push: true
+          tags: ${{ steps.meta.outputs.tags }}-alpine
+          labels: ${{ steps.meta.outputs.labels }}

Dockerfile.alpine

@@ -0,0 +1,18 @@
+####################################################################################################
+## Builder
+####################################################################################################
+FROM rust:latest AS builder
+WORKDIR /worker
+COPY ./ .
+RUN rustup target add x86_64-unknown-linux-musl 
+RUN cargo build --release --target x86_64-unknown-linux-musl
+
+####################################################################################################
+## Final image
+####################################################################################################
+FROM alpine:latest
+RUN apk add --no-cache iproute2
+
+COPY --from=builder /worker/target/x86_64-unknown-linux-musl/release/tun2proxy-bin /usr/bin/tun2proxy-bin
+
+ENTRYPOINT ["/usr/bin/tun2proxy-bin", "--setup"]

README.md

@@ -212,7 +212,7 @@ services:
     cap_add:
       - NET_ADMIN
     container_name: tun2proxy
-    image: ghcr.io/tun2proxy/tun2proxy:latest
+    image: ghcr.io/tun2proxy/tun2proxy:latest-ubuntu
     command: --proxy proto://[username[:password]@]host:port
   alpine:
     stdin_open: true