--- a/testing/docker/build.sh
+++ b/testing/docker/build.sh
@@ -6,21 +6,16 @@
 
 gecko_root="$( cd "$( dirname "${BASH_SOURCE[0]}" )/../.." && pwd )"
 
 build() {
   local image_name=$1
   local tag=$2
   local folder="$gecko_root/testing/docker/$image_name"
 
-  if [ -f $folder/build.sh ]; then
-    shift
-    $folder/build.sh -t $tag $* || exit 1
-  else
-    # use --no-cache so that we always get the latest updates from yum
-    # and use the latest version of system-setup.sh
-    ( cd $folder/.. && docker build --no-cache -t $tag $image_name ) || exit 1
-  fi
+  # use --no-cache so that we always get the latest updates from yum
+  # and use the latest version of system-setup.sh
+  ( cd $folder/.. && docker build --no-cache -t $tag $image_name ) || exit 1
 
   echo "Success built $image_name and tagged with $tag"
 }
 
 build $*