Need the or case

Author: emersonknapp

.github/workflows/build.yml

@@ -59,8 +59,8 @@ jobs:
             ROS_DISTRO=none
             ROS_TESTING=${{ matrix.ros_testing && 'true' || '' }}
           tags: |
-            rostooling/setup-ros-docker:ubuntu-${{ matrix.base_image_tag }}${{ matrix.ros_testing && '-testing'}}-latest
-            ghcr.io/ros-tooling/setup-ros-docker/setup-ros-docker-ubuntu-${{ matrix.base_image_tag }}${{ matrix.ros_testing && '-testing'}}:latest
+            rostooling/setup-ros-docker:ubuntu-${{ matrix.base_image_tag }}${{ matrix.ros_testing && '-testing' || ''}}-latest
+            ghcr.io/ros-tooling/setup-ros-docker/setup-ros-docker-ubuntu-${{ matrix.base_image_tag }}${{ matrix.ros_testing && '-testing' || ''}}:latest
 
   ros_variant:
     if: false