Fix builders.sh

Change-Id: Id4b5f9e9b819279e189dccf55215bb7ba854ba31
Signed-off-by: Saheer Babu <saheer.babu@arm.com>
diff --git a/ci-dockerfiles-deployment/container-build.jpl b/ci-dockerfiles-deployment/container-build.jpl
index 0a3430d..969bb34 100644
--- a/ci-dockerfiles-deployment/container-build.jpl
+++ b/ci-dockerfiles-deployment/container-build.jpl
@@ -40,8 +40,8 @@
                     checkout scm
                     sh """
                       PROJECT="dockerfiles"
-                      git clone https://${env.GERRIT_HOST}/${env.GERRIT_PROJECT} ${PROJECT}
-                      cd ${PROJECT}
+                      git clone https://${env.GERRIT_HOST}/${env.GERRIT_PROJECT} ${env.PROJECT}
+                      cd ${env.PROJECT}
                       git fetch origin ${env.GERRIT_REFSPEC}
                       git checkout FETCH_HEAD
                     """