chore: Add multi-arch build support (#31)

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/api .
+COPY ./dist/api-${TARGETARCH} /api
 
 USER 65532:65532
 

Makefile

@@ -26,7 +26,7 @@ $(LOCALBIN):
 
 .PHONY: build
 build: ## build binary
-	CGO_ENABLED=0 GOOS=${HOST_OS} GOARCH=${HOST_ARCH} go build -v -ldflags '${LDFLAGS}' -o ${DIST_DIR}/api -gcflags '${GCFLAGS}' ./cmd/gitfusion-api
+	CGO_ENABLED=0 GOOS=${HOST_OS} GOARCH=${HOST_ARCH} go build -v -ldflags '${LDFLAGS}' -o ${DIST_DIR}/api-${HOST_ARCH} -gcflags '${GCFLAGS}' ./cmd/gitfusion-api
 
 .PHONY: generate
 generate: oapi-codegen # Generate the server code from OpenAPI spec