Installing rqt_graph in ROS2 Dashing

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I am trying to install rqt_graph for ROS2 to visualize the ROS nodes and the computation graph. I have ROS2 dashing installed in the docker (using the Autoware.Auto class/tutorial) After entering ade and sourcing the setup.bash in Autoware.Auto, I use the following command:

sudo apt-get install ros2-dashing-rqt_graph

and I get the following error:

Unable to locate package ros2-dashing-rqt-graph

Could anyone help me out here? Thank you!