allow to specify WorkDir via env var

Signed-off-by: Vasiliy Tolstov <v.tolstov@selfip.ru>

modules/setting/setting.go

@@ -162,9 +162,13 @@ func ExecPath() (string, error) {
 
 // WorkDir returns absolute path of work directory.
 func WorkDir() (string, error) {
+	work := os.Getenv("WORK_DIR")
+	if len(work) == 0 {
 		execPath, err := ExecPath()
 		return path.Dir(strings.Replace(execPath, "\\", "/", -1)), err
 	}
+	return work, nil
+}
 
 func forcePathSeparator(path string) {
 	if strings.Contains(path, "\\") {