add new env file

ts/npmci.build.ts

@@ -0,0 +1,8 @@
+import "typings-global";
+import * as plugins from "./npmci.plugins";
+import {bash} from "./npmci.bash";
+
+export let build = function(commandArg){
+    let done = plugins.q.defer();
+    return done.promise;
+}

ts/npmci.env.ts

@@ -0,0 +1,3 @@
+export let env = function(){
+    
+};

ts/npmci.prepare.ts

@@ -1,5 +1,6 @@
 import "typings-global";
 import * as plugins from "./npmci.plugins";
+import {bash} from "./npmci.bash";
 
 let docker = function(){
     let done = plugins.q.defer();
@@ -7,7 +8,7 @@ let docker = function(){
     let dockerRegexResultArray = dockerRegex.exec("process.env.NPMCI_LOGIN_DOCKER");
     let username = dockerRegexResultArray[1];
     let password = dockerRegexResultArray[2];
-    plugins.shelljs.exec("docker login -u " + username + " -p " + password);
+    bash("docker login -u " + username + " -p " + password);
     done.resolve();
     return done.promise;
 }