Merge pull request #478 from fluxcd/docker-sbom

build: Enable SBOM and SLSA Provenance

.github/workflows/release.yml

@@ -32,8 +32,8 @@ jobs:
           if [[ $GITHUB_REF == refs/tags/* ]]; then
             VERSION=${GITHUB_REF/refs\/tags\//}
           fi
-          echo ::set-output name=BUILD_DATE::$(date -u +'%Y-%m-%dT%H:%M:%SZ')
-          echo ::set-output name=VERSION::${VERSION}
+          echo "BUILD_DATE=$(date -u +'%Y-%m-%dT%H:%M:%SZ')" >> $GITHUB_OUTPUT
+          echo "VERSION=${VERSION}" >> $GITHUB_OUTPUT
       - name: Setup QEMU
         uses: docker/setup-qemu-action@v2
       - name: Setup Docker Buildx
@@ -62,6 +62,8 @@ jobs:
       - name: Publish images
         uses: docker/build-push-action@v3
         with:
+          sbom: true
+          provenance: true
           push: true
           builder: ${{ steps.buildx.outputs.name }}
           context: .

Dockerfile

@@ -61,7 +61,7 @@ RUN export CGO_LDFLAGS="-static -fuse-ld=lld" && \
 # Ensure that the binary was cross-compiled correctly to the target platform.
 RUN xx-verify --static /image-automation-controller
 
-FROM alpine:3.16
+FROM alpine:3.17
 
 ARG TARGETPLATFORM
 RUN apk --no-cache add ca-certificates \