diff --git a/docker_templates/create.py b/docker_templates/create.py
index 2910043..33b7798 100644
--- a/docker_templates/create.py
+++ b/docker_templates/create.py
@@ -13,6 +13,7 @@
 # limitations under the License.
 
 import importlib
+from importlib import resources
 import os
 import shutil
 
diff --git a/docker_templates/packages.py b/docker_templates/packages.py
index 609ab6c..3d9cb6a 100644
--- a/docker_templates/packages.py
+++ b/docker_templates/packages.py
@@ -36,7 +36,7 @@
 indexUrlTemplateLookup = {
     'gazebo_packages':  string.Template('http://packages.osrfoundation.org/gazebo/$os_name-$release/dists/$os_code_name/main/binary-$arch/Packages.gz'),
     'ros_packages':     string.Template('http://packages.ros.org/ros/ubuntu/dists/$os_code_name/main/binary-$arch/Packages.gz'),
-    'ros2_packages':    string.Template('http://packages.ros.org/ros2/ubuntu/dists/$os_code_name/main/binary-$arch/Packages.gz'),
+    'ros2_packages':    string.Template('http://packages.ros.org/ros2-testing/ubuntu/dists/$os_code_name/main/binary-$arch/Packages.gz'),
     'ros_packages_snapshots':    string.Template('http://snapshots.ros.org/$rosdistro_name/final/$os_name/dists/$os_code_name/main/binary-$arch/Packages.gz'),
     'ros2_packages_snapshots':    string.Template('http://snapshots.ros.org/$ros2distro_name/final/$os_name/dists/$os_code_name/main/binary-$arch/Packages.gz'),
 }
diff --git a/docker_templates/templates/docker_images_ros2/create_ros_core_image.Dockerfile.em b/docker_templates/templates/docker_images_ros2/create_ros_core_image.Dockerfile.em
index 9dd6818..6a9781c 100644
--- a/docker_templates/templates/docker_images_ros2/create_ros_core_image.Dockerfile.em
+++ b/docker_templates/templates/docker_images_ros2/create_ros_core_image.Dockerfile.em
@@ -49,6 +49,7 @@ if 'pip3_install' in locals():
     os_name=os_name,
     os_code_name=os_code_name,
     ros_distro=ros2distro_name,
+    testing_repo=testing_repo,
 ))@
 
 # setup environment