Compile golang source for linux and windows

build.sh

#!/usr/bin/env bash

# Build tool
# Writes the compiled executables in ./build
#
# see https://www.digitalocean.com/community/tutorials/how-to-build-go-executables-for-multiple-platforms-on-ubuntu-16-04
package=$1
if [[ -z "$package" ]]; then
  echo "usage: $0 <package-name>"
  exit 1
fi
package_split=(${package//\// })
package_name=${package_split[-1]}
	
platforms=("windows/amd64" "linux/amd64")

for platform in "${platforms[@]}"
do
	platform_split=(${platform//\// })
	GOOS=${platform_split[0]}
	GOARCH=${platform_split[1]}
	output_name='./build/'$package_name'-'$GOOS'-'$GOARCH
	if [ $GOOS = "windows" ]; then
		output_name+='.exe'
	fi	

	env GOOS=$GOOS GOARCH=$GOARCH go build -o $output_name $package
	if [ $? -ne 0 ]; then
   		echo 'An error has occurred! Aborting the script execution...'
		exit 1
	fi
done