arg fix

Author: walnuts1018

Dockerfile

@@ -1,7 +1,5 @@
 # Build the manager binary
 FROM golang:1.21 AS builder
-ARG TARGETOS
-ARG TARGETARCH
 
 WORKDIR /workspace
 # Copy the Go Modules manifests
@@ -21,7 +19,7 @@ COPY internal/controller/ internal/controller/
 # was called. For example, if we call make docker-build in a local env which has the Apple Silicon M1 SO
 # the docker BUILDPLATFORM arg will be linux/arm64 when for Apple x86 it will be linux/amd64. Therefore,
 # by leaving it empty we can ensure that the container and binary shipped on it will have the same platform.
-RUN CGO_ENABLED=0 GOOS=${TARGETOS:-linux} GOARCH=${TARGETARCH} go build -a -o manager cmd/main.go
+RUN CGO_ENABLED=0 go build -a -o manager cmd/main.go
 
 # Use distroless as minimal base image to package the manager binary
 # Refer to https://github.com/GoogleContainerTools/distroless for more details