Update Dockerfile

Dockerfile

@@ -1,6 +1,7 @@
 ARG DOCKER_REGISTRY
 ARG DISTROLESS_DOCKER_REGISTRY
 ARG ALPINE_VERSION=3.18
+ARG TARGETARCH
 FROM ${DOCKER_REGISTRY:+$DOCKER_REGISTRY/}golang:1.21-alpine${ALPINE_VERSION} as go-builder
 
 ARG PROJECT_NAME=zookeeper-operator
@@ -26,7 +27,7 @@ COPY api/ api/
 COPY controllers/ controllers/
 
 # Build
-RUN GOOS=linux GOARCH=amd64 CGO_ENABLED=0 go build -o /src/${PROJECT_NAME} \
+RUN GOOS=linux GOARCH=${TARGETARCH} CGO_ENABLED=0 go build -o /src/${PROJECT_NAME} \
     -ldflags "-X ${REPO_PATH}/pkg/version.Version=${VERSION} -X ${REPO_PATH}/pkg/version.GitSHA=${GIT_SHA}" main.go
 
 FROM ${DISTROLESS_DOCKER_REGISTRY:-gcr.io/}distroless/static-debian11:nonroot AS final