ROS is already installed on DiCE but the ROS tools need to be made available to your DiCE user account so you can run them from the terminal.
Several Steps need to be done before running ROS
Open a terminal, then type
gedit ~/.bashrc
Add the line to the file
source /opt/ros/noetic/setup.bash
Remember to save ~/.bashrc. Then at the terminal, run:
source ~/.bashrc
To check you now have access to ROS, try running:
roscore
This can take a moment to start, the final line should read:
started core service [/rosout]
If roscore starts successfully, you can move on.
Before you start, you need to set up your workspace in terminal.
Open a terminal:
mkdir -p ~/catkin_ws/src
cd ~/catkin_ws
catkin_make
Again, open ~/.bashrc and at the end of the file, add
source ~/catkin_ws/devel/setup.bash