Build the Docker image for Intel and ARM

.github/workflows/build.yml

@@ -23,9 +23,6 @@ jobs:
       - name: Checkout repository
         uses: actions/checkout@v4
 
-      - name: Build mysqld_exporter
-        run: make build
-
       - name: Log in to the Container registry
         uses: docker/login-action@v3
         with:
@@ -45,6 +42,7 @@ jobs:
         with:
           context: .
           labels: ${{ steps.meta.outputs.labels }}
+          platforms: linux/amd64,linux/arm64
           push: true
           tags: ${{ steps.meta.outputs.tags }}
 

Dockerfile

@@ -1,10 +1,13 @@
-ARG ARCH="amd64"
-ARG OS="linux"
-FROM quay.io/prometheus/busybox-${OS}-${ARCH}:latest
-LABEL maintainer="The Prometheus Authors <[email protected]>"
+FROM --platform=$BUILDPLATFORM golang:bookworm AS build
+ARG TARGETOS
+ARG TARGETARCH
+RUN apt-get -y install make
+COPY . /mysqld_exporter
+RUN rm -f /mysqld_exporter/mysqld_exporter
+RUN CGO_ENABLED=0 GOOS="$TARGETOS" GOARCH="$TARGETARCH" make -C /mysqld_exporter build
 
-COPY ./mysqld_exporter /bin/mysqld_exporter
-
-EXPOSE      9104
-USER        nobody
-ENTRYPOINT  [ "/bin/mysqld_exporter" ]
+FROM golang:alpine
+COPY --from=build /mysqld_exporter/mysqld_exporter /bin/mysqld_exporter
+EXPOSE 9104
+USER nobody
+ENTRYPOINT ["/bin/mysqld_exporter"]