For more information see the pages Continuous Integration and Docker and Using Docker Containers with MoveIt.
To build the Docker image locally, run the following from the root folder of this repository.
docker build -f .docker/Dockerfile -t moveit2_tutorials --build-arg ROS_DISTRO=${ROS_DISTRO}.
where ${ROS_DISTRO} should be available if you have a ROS installation sourced locally, else you can pick a target release, e.g., humble or rolling.