Enable linux/arm64 docker build and publish (#2601)

* Enable linux/arm64 docker build and publish

* Fix Dockerfile for multi-arch

* Fix Dockerfile - missing args

* Fix Dockerfile - Docker likes x86_64

* Remove unused `RUNNER_ARCH`

---------

Signed-off-by: Dee Kryvenko <dm.kryvenko@gmail.com>

.github/workflows/publish-image.yml

@@ -53,6 +53,9 @@ jobs:
         uses: docker/build-push-action@v3
         with:
           context: ./images
+          platforms: |
+            linux/amd64
+            linux/arm64
           tags: |
             ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}:${{ steps.image.outputs.version }}
             ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}:latest

.github/workflows/release.yml

@@ -699,6 +699,9 @@ jobs:
         uses: docker/build-push-action@v3
         with:
           context: ./images
+          platforms: |
+            linux/amd64
+            linux/arm64
           tags: |
             ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}:${{ steps.image.outputs.version }}
             ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}:latest

images/Dockerfile

@@ -1,25 +1,29 @@
 # Source: https://github.com/dotnet/dotnet-docker
 FROM mcr.microsoft.com/dotnet/runtime-deps:6.0-jammy as build
 
+ARG TARGETOS
+ARG TARGETARCH
 ARG RUNNER_VERSION
-ARG RUNNER_ARCH="x64"
 ARG RUNNER_CONTAINER_HOOKS_VERSION=0.3.2
 ARG DOCKER_VERSION=20.10.23
 
 RUN apt update -y && apt install curl unzip -y
 
 WORKDIR /actions-runner
-RUN curl -f -L -o runner.tar.gz https://github.com/actions/runner/releases/download/v${RUNNER_VERSION}/actions-runner-linux-${RUNNER_ARCH}-${RUNNER_VERSION}.tar.gz \
+RUN export RUNNER_ARCH=${TARGETARCH} \
+    && if [ "$RUNNER_ARCH" = "amd64" ]; then export RUNNER_ARCH=x64 ; fi \
+    && curl -f -L -o runner.tar.gz https://github.com/actions/runner/releases/download/v${RUNNER_VERSION}/actions-runner-${TARGETOS}-${RUNNER_ARCH}-${RUNNER_VERSION}.tar.gz \
     && tar xzf ./runner.tar.gz \
     && rm runner.tar.gz
 
 RUN curl -f -L -o runner-container-hooks.zip https://github.com/actions/runner-container-hooks/releases/download/v${RUNNER_CONTAINER_HOOKS_VERSION}/actions-runner-hooks-k8s-${RUNNER_CONTAINER_HOOKS_VERSION}.zip \
     && unzip ./runner-container-hooks.zip -d ./k8s \
     && rm runner-container-hooks.zip
 
-RUN export DOCKER_ARCH=x86_64 \
+RUN export RUNNER_ARCH=${TARGETARCH} \
+    && if [ "$RUNNER_ARCH" = "amd64" ]; then export DOCKER_ARCH=x86_64 ; fi \
     && if [ "$RUNNER_ARCH" = "arm64" ]; then export DOCKER_ARCH=aarch64 ; fi \
-    && curl -fLo docker.tgz https://download.docker.com/linux/static/stable/${DOCKER_ARCH}/docker-${DOCKER_VERSION}.tgz \
+    && curl -fLo docker.tgz https://download.docker.com/${TARGETOS}/static/stable/${DOCKER_ARCH}/docker-${DOCKER_VERSION}.tgz \
     && tar zxvf docker.tgz \
     && rm -rf docker.tgz