remove need for bash in docker environment

ts/npmci.prepare.ts

@@ -12,7 +12,7 @@ let docker = function(){
     let dockerRegexResultArray = dockerRegex.exec(process.env.NPMCI_LOGIN_DOCKER);
     let username = dockerRegexResultArray[1];
     let password = dockerRegexResultArray[2];
-    bash("docker login -u " + username + " -p " + password);
+    plugins.shelljs.exec("docker login -u " + username + " -p " + password);
     done.resolve();
     return done.promise;
 }

ts/npmci.trigger.ts

@@ -20,7 +20,7 @@ export let trigger = function(){
             let regexProjectTriggerToken = triggerRegexResultArray[3];
             let regexRefName = triggerRegexResultArray[4];
             let regexTriggerName;
-            if(triggerRegexResultArray.length = 5){
+            if(triggerRegexResultArray.length == 5){
                 regexTriggerName = triggerRegexResultArray[5];
             } else {
                 regexTriggerName = "Unnamed Trigger";