cross compile golang using alpine

gocross-alpine

#!/bin/bash

PWD=$(pwd)

if [ -n "${PWD##*$GOPATH*}" ]; then
        echo "$PWD not in $GOPATH"
        exit 1
fi

P=${PWD:${#GOPATH}}
P=/go/${P#/}
docker run --rm -it --volume $PWD:$P -w $P golang:1.10.3-alpine sh