feat: Speed up the building process of API Server image (#124)

Author: CH3CHO

src/apiserver/Dockerfile

@@ -1,4 +1,4 @@
-FROM golang:1.23.2 as builder
+FROM --platform=$BUILDPLATFORM golang:1.23.2 as builder
 
 ARG GOPROXY
 ENV GOPROXY=${GOPROXY}
@@ -8,9 +8,12 @@ WORKDIR /workspace
 # Copy the go source
 COPY . ./
 
+ARG TARGETOS
+ARG TARGETARCH
+
 # Build
 RUN go mod tidy
-RUN CGO_ENABLED=0 GOOS=linux go build -a -o apiserver main.go
+RUN CGO_ENABLED=0 GOOS=${TARGETOS} GOARCH=${TARGETARCH} go build -a -o apiserver main.go
 
 # Use distroless as minimal base image to package the manager binary
 # Refer to https://github.com/GoogleContainerTools/distroless for more details