go程序在alpine鏡像裏無法正常運行

[root@spray2:~]# kubectl logs -f client-go-in-cluster-demo
standard_init_linux.go:211: exec user process caused "no such file or directory"
.
非常簡單的Dockerfile
[root@omp-harbor:/data/Dockerfile/k8stest]# vim Dockerfile
FROM alpine:3.12.3

COPY ./app /app
CMD ["/app"]
.
搞了半天，其實是alpine鏡像的問題：
https://stackoverflow.com/a/62123648
.

CGO has to be disabled for alpine

export CGO_ENABLED=0
Then go build
.

All OK啦！！！！