func GetHomeDirectory() (string, error) {
	home, ok := os.LookupEnv("MICROFAB_HOME")
	if !ok {
		var err error
		home, err = os.Getwd()
		if err != nil {
			return "", err
		}
	}
	return home, nil
}
GetHomeDirectory returns the Microfab home directory.
package util
import (
	"io/ioutil"
	"os"
	"path"
	"github.com/IBM-Blockchain/microfab/internal/pkg/identity"
	"github.com/golang/protobuf/proto"
)