chore: Add multi-architecture build support (#168)

Author: daniil-nedostup

Dockerfile

@@ -1,8 +1,9 @@
 # Use distroless as minimal base image to package the manager binary
 # Refer to https://github.com/GoogleContainerTools/distroless for more details
 FROM gcr.io/distroless/static:nonroot
+ARG TARGETARCH
 WORKDIR /
-COPY ./dist/manager .
+COPY ./dist/manager-${TARGETARCH} /manager
 
 USER 65532:65532
 

Makefile

@@ -122,8 +122,8 @@ lint: golangci-lint ## Run go lint
 	${GOLANGCI_LINT} run -v -c .golangci.yaml ./...
 
 .PHONY: build
-build: clean ## build operator's binary
-	CGO_ENABLED=0 GOOS=${HOST_OS} GOARCH=${HOST_ARCH} go build -v -ldflags '${LDFLAGS}' -o ${DIST_DIR}/${BIN_NAME} -gcflags '${GCFLAGS}' ./cmd
+build:  ## build operator's binary
+	CGO_ENABLED=0 GOOS=${HOST_OS} GOARCH=${HOST_ARCH} go build -v -ldflags '${LDFLAGS}' -o ${DIST_DIR}/${BIN_NAME}-${HOST_ARCH} -gcflags '${GCFLAGS}' ./cmd
 
 .PHONY: clean
 clean:  ## clean up