Add multiarch image build support using github actions.

These changes enable the building of the Multus Dynamic CNI image for multiple platforms (amd64, arm64, s390x) from a single Dockerfile Signed-off-by: Ashok Pariya <[email protected]>
k8snetworkplumbingwg · Dec 2, 2024 · d765a56 · d765a56
1 parent a2f19b7
commit d765a56
Show file tree

Hide file tree

Showing 2 changed files with 14 additions and 6 deletions.
diff --git a/.github/workflows/image-push.yaml b/.github/workflows/image-push.yaml
@@ -7,9 +7,10 @@ on:
       - 'v*.*.*'
 env:
   image-push-owner: 'k8snetworkplumbingwg'
+  BUILD_PLATFORMS: linux/amd64,linux/arm64,linux/s390x
 jobs:
-  push-amd64:
-    name: Image push/amd64
+  push-image:
+    name: Image push
     runs-on: ubuntu-latest
     steps:
       - name: Check out code into the Go module directory
@@ -36,8 +37,9 @@ jobs:
         with:
           context: .
           push: true
-          tags: ghcr.io/${{ github.repository }}:latest-amd64
+          tags: ghcr.io/${{ github.repository }}:latest
           file: images/Dockerfile
+          platforms: ${{ env.BUILD_PLATFORMS }}
           build-args: |
             git_sha=${{ env.git_commit_hash }}
 
@@ -49,6 +51,7 @@ jobs:
           push: true
           tags: ghcr.io/${{ github.repository }}:${{  github.ref_name }}
           file: images/Dockerfile
+          platforms: ${{ env.BUILD_PLATFORMS }}
           build-args: |
             git_sha=${{ env.git_commit_hash }}
 

diff --git a/images/Dockerfile b/images/Dockerfile
@@ -1,11 +1,16 @@
-FROM quay.io/projectquay/golang:1.22 as builder
+FROM --platform=$BUILDPLATFORM quay.io/projectquay/golang:1.22 AS builder
 ENV GOPATH=/go
+ARG TARGETOS
+ARG TARGETARCH
+ENV TARGETOS=${TARGETOS:-linux}
+ENV TARGETARCH=${TARGETARCH:-amd64}
+
 RUN mkdir -p $GOPATH/src/github.com/maiqueb/multus-dynamic-networks-controller
 WORKDIR $GOPATH/src/github.com/maiqueb/multus-dynamic-networks-controller
 COPY . .
-RUN GOOS=linux CGO_ENABLED=0 go build -o /dynamic-networks-controller ./cmd/dynamic-networks-controller
+RUN GOOS=${TARGETOS} GOARCH=${TARGETARCH} CGO_ENABLED=0 go build -o /dynamic-networks-controller ./cmd/dynamic-networks-controller
 
-FROM registry.access.redhat.com/ubi8/ubi-minimal
+FROM --platform=linux/${TARGETARCH} registry.access.redhat.com/ubi8/ubi-minimal
 COPY --from=builder /dynamic-networks-controller /dynamic-networks-controller
 
 ARG git_url=https://github.com/k8snetworkplumbingwg/multus-dynamic-networks-controller.git