fix arm image build issue (#114)

Signed-off-by: haoqing0110 <[email protected]>

Author: haoqing0110

Dockerfile

@@ -1,10 +1,16 @@
 FROM golang:1.19 AS builder
+ARG OS=linux
+ARG ARCH=amd64
 WORKDIR /go/src/open-cluster-management.io/placement
 COPY . .
 ENV GO_PACKAGE open-cluster-management.io/placement
 
-RUN make build --warn-undefined-variables
-RUN make build-e2e --warn-undefined-variables
+RUN GOOS=${OS} \
+    GOARCH=${ARCH} \
+    make build --warn-undefined-variables
+RUN GOOS=${OS} \
+    GOARCH=${ARCH} \
+    make build-e2e --warn-undefined-variables
 
 FROM registry.access.redhat.com/ubi8/ubi-minimal:latest
 ENV USER_UID=10001