This post is written by Jaeyoung Lim
Ignition Gazebo has been integrated into the PX4 simulation framework:
To run this example, simply run the following command in the root of the PX4-Autopilot repository
make px4_sitl ignition
The repository can be found in https://github.com/Auterion/px4-simulation-ignition
Installation instructions can be found in: http://docs.px4.io/master/en/simulation/ignition_gazebo.html#ignition-gazebo-simulation
This has been presented in the PX4 Dev Summit 2021