fix build command

ts/npmci.build.docker.ts

@@ -3,7 +3,7 @@ import * as NpmciEnv from "./npmci.env";
 
 
 export let build = function(){
-    let done = plugins.q.defer();;
+    let done = plugins.q.defer();
     plugins.gulp.dest("./Dockerfile*")
         .pipe(readDockerfiles)
         .pipe(plugins.gulpFunction(function(){

ts/npmci.build.ts

@@ -8,6 +8,8 @@ export let build = function(commandArg){
     switch(commandArg){
         case "docker":
             return buildDocker.build();   
+        default:
+            plugins.beautylog.log("build target " + commandArg + " not recognised!");
     }
 }