Cannot locate rosdep definition for [ament_lint_common]

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I'm trying to clone a robot simulator from https://github.com/chapulina/dolly I'm using Ubuntu 20.04 Focal Fossa and ROS 2 on Foxy Fitzroy on a VM.

Once I try to install dependencies using the command: "rosdep install --from-paths src --ignore-src -r -y" I get the error

WARNING: ROS_PYTHON_VERSION is unset. Defaulting to 3
ERROR: the following packages/stacks could not have their rosdep keys resolved
to system dependencies (ROS distro is not set. Make sure ROS_DISTRO environment variable is set, or use --rosdistro option to specify the distro, e.g. --rosdistro indigo):
dolly_follow: Cannot locate rosdep definition for [ament_lint_common]
dolly_ignition: Cannot locate rosdep definition for [ament_lint_common]
dolly_gazebo: Cannot locate rosdep definition for [ament_lint_common]
dolly: Cannot locate rosdep definition for [ament_lint_common]
Continuing to install resolvable dependencies...
All required rosdeps installed successfully

I tried finding another package name for amen_lint_common from

https://github.com/ros/rosdistro/blob... but no luck.

Any help would be very appreciated.