diff --git a/lunar_sim/Dockerfile b/lunar_sim/Dockerfile
index b8b5951..73c53b1 100644
--- a/lunar_sim/Dockerfile
+++ b/lunar_sim/Dockerfile
@@ -143,9 +143,6 @@ RUN --mount=type=cache,target=/var/cache/apt,sharing=locked \
 && /bin/bash -c 'source "${SPACEROS_DIR}/install/setup.bash"' \
 && rosdep install --from-paths src --ignore-src -r -y --rosdistro ${ROSDISTRO}
 
-# Copy the demo source code
-COPY --chown=${USERNAME}:${USERNAME} space-ros-demos-er src/
-
 # Build the demo
 RUN /bin/bash -c 'source ${SPACEROS_DIR}/install/setup.bash \
   && colcon build --cmake-args -DCMAKE_BUILD_TYPE=Release --packages-skip canadarm canadarm_moveit_config mars_rover space_ros_memory_allocation_demo'
diff --git a/lunar_sim/demo_manual_pkgs.repos b/lunar_sim/demo_manual_pkgs.repos
index 8734164..aec190a 100644
--- a/lunar_sim/demo_manual_pkgs.repos
+++ b/lunar_sim/demo_manual_pkgs.repos
@@ -1,4 +1,8 @@
 repositories:
+  demos:
+    type: git
+    url: https://github.com/element-robotics/demos.git
+    version: feature/lunarsim
   actuator_msgs:
     type: git
     url: https://github.com/rudislabs/actuator_msgs.git