Fix builders.sh

Change-Id: I1ec0928206f734b9e2dceec3a99a50e71efef1a4
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 4abb583..12f7b98 100644
--- a/ci-dockerfiles-deployment/container-build.jpl
+++ b/ci-dockerfiles-deployment/container-build.jpl
@@ -42,8 +42,8 @@
                     sh """
                       env
                       PROJECT="dockerfiles"
-                      git clone https://${env.GERRIT_HOST}/${env.GERRIT_PROJECT} ${env.PROJECT}
-                      cd ${env.PROJECT}
+                      git clone https://${env.GERRIT_HOST}/${env.GERRIT_PROJECT} ${PROJECT}
+                      cd ${PROJECT}
                       git fetch origin ${env.GERRIT_REFSPEC}
                       git checkout FETCH_HEAD
                     """