Build Docker image for ARM64 as well

.github/workflows/docker.yml

@@ -17,7 +17,7 @@ on:
         description: 'Docker tag'
         required: true
         type: string
-        default: 'latest'
+        default: 'preview'
 
 jobs:
   build:
@@ -34,6 +34,10 @@ jobs:
       run: echo "REPOSITORY_LC=${REPOSITORY,,}" >> $GITHUB_ENV
       env:
         REPOSITORY: '${{ github.repository }}'
+    - name: Set up QEMU
+      uses: docker/setup-qemu-action@v3
+      with:
+        platforms: arm64
     - name: Set up Docker Buildx
       uses: docker/setup-buildx-action@v3
     - name: Login to GitHub registry
@@ -44,5 +48,6 @@ jobs:
         registry: ghcr.io
     - uses: docker/build-push-action@v6
       with:
-        push: true
+        push: false
         tags: ghcr.io/${{ env.REPOSITORY_LC }}:${{ env.DOCKER_TAG }}
+        platforms: linux/amd64,linux/arm64

Dockerfile

@@ -4,28 +4,26 @@ ARG RUNTIME_IMAGE=ubuntu:noble
 
 # Builder image
 FROM ${BUILDER_IMAGE} AS builder
-RUN apt-get update && apt-get install -y \
-    libcurl4-openssl-dev \
-    libxml2-dev \
- && rm -r /var/lib/apt/lists/*
+RUN apt-get update && apt-get install -y libcurl4-openssl-dev libxml2-dev
+RUN rm -r /var/lib/apt/lists/*
 WORKDIR /workdir/
 COPY Plugins Plugins/
 COPY Source Source/
 COPY Tests Tests/
 COPY Package.* ./
 
+RUN echo `swift build $SWIFT_FLAGS --show-bin-path`
 RUN swift package update
-ARG SWIFT_FLAGS="-c release -Xswiftc -static-stdlib -Xlinker -l_CFURLSessionInterface -Xlinker -l_CFXMLInterface -Xlinker -lcurl -Xlinker -lxml2 -Xswiftc -I. -Xlinker -fuse-ld=lld -Xlinker -L/usr/lib/swift/linux"
+ARG SWIFT_FLAGS="-c debug -Xswiftc -static-stdlib -Xlinker -l_CFURLSessionInterface -Xlinker -l_CFXMLInterface -Xlinker -lcurl -Xlinker -lxml2 -Xswiftc -I. -Xlinker -fuse-ld=lld -Xlinker -L/usr/lib/swift/linux"
 RUN swift build $SWIFT_FLAGS --product swiftlint
-RUN mv `swift build $SWIFT_FLAGS --show-bin-path`/swiftlint /usr/bin
+RUN ls -l `swift build $SWIFT_FLAGS --show-bin-path`
+RUN mv `swift build $SWIFT_FLAGS --show-bin-path`/swiftlint /workdir
 
 # Runtime image
 FROM ${RUNTIME_IMAGE}
 LABEL org.opencontainers.image.source=https://github.com/realm/SwiftLint
-RUN apt-get update && apt-get install -y \
-    libcurl4 \
-    libxml2 \
- && rm -r /var/lib/apt/lists/*
+RUN apt-get update && apt-get install -y libcurl4 libxml2
+RUN rm -r /var/lib/apt/lists/*
 COPY --from=builder /usr/lib/libsourcekitdInProc.so /usr/lib
 COPY --from=builder /usr/lib/swift/host/libSwiftBasicFormat.so /usr/lib
 COPY --from=builder /usr/lib/swift/host/libSwiftCompilerPluginMessageHandling.so /usr/lib
@@ -55,7 +53,7 @@ COPY --from=builder /usr/lib/swift/linux/libswiftDispatch.so /usr/lib
 COPY --from=builder /usr/lib/swift/linux/libswiftGlibc.so /usr/lib
 COPY --from=builder /usr/lib/swift/linux/libswiftSynchronization.so /usr/lib
 COPY --from=builder /usr/lib/swift/linux/libswiftSwiftOnoneSupport.so /usr/lib
-COPY --from=builder /usr/bin/swiftlint /usr/bin
+COPY --from=builder /workdir/swiftlint /usr/bin
 
 RUN swiftlint version
 RUN echo "_ = 0" | swiftlint --use-stdin