Fix builders.sh

Change-Id: I2033a7e418d7cf4003d3f758e5f9bfc1b02a2837
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 c2b9695..1fb6202 100644
--- a/ci-dockerfiles-deployment/container-build.jpl
+++ b/ci-dockerfiles-deployment/container-build.jpl
@@ -43,9 +43,9 @@
                     sh '''
                       env
                       PROJECT="dockerfiles"
-                      git clone https://$GERRIT_HOST/${GERRIT_PROJECT} $PROJECT
+                      git clone https://${GERRIT_HOST}/${GERRIT_PROJECT} ${PROJECT}
                       cd ${PROJECT}
-                      git fetch origin ${env.GERRIT_REFSPEC}
+                      git fetch origin ${GERRIT_REFSPEC}
                       git checkout FETCH_HEAD
                     '''