use the new Maven plugin to supply user

Author: Vladimir Kotal

wercker.yml

@@ -14,17 +14,13 @@ build:
     - install-packages:
       packages: sudo maven exuberant-ctags cvs git mercurial cssc bzr subversion monotone rcs pep8
     - script:
-      name: Maven install
+      name: Create non-root user
       code: |
         /usr/sbin/groupadd -g 1000 foobar
         /usr/sbin/useradd -u 1000 -g 1000 -s /bin/bash -m foobar
-        echo $WERCKER_ROOT > /tmp/wroot
         chown -R foobar:foobar $WERCKER_ROOT
-        /usr/bin/sudo -i -u foobar -- bash -c 'cd `cat /tmp/wroot`; /usr/bin/mvn verify'
-
-# Ideally this should support running under non-root user:
-#    # https://github.com/wercker/step-maven
-#    - wercker/maven:
-#      goals: install
-#      cache_repo: true
-#      version: 3.5.2
+    - wercker/[email protected]:
+      goals: install
+      cache_repo: true
+      sudo_user: foobar
+      version: 3.5.2