This is a prerequisite for our testing; therefore, let's go ahead with installing the TurtleBot packages.

Since we're using ROS Melodic, there isn't any Debian package of the TurtleBot simulator. Therefore, we shall source the workspace from https://github.com/turtlebot/turtlebot_simulator. Let's begin installing the Turtlebot simulator as follows:

1. Clone the package using the following command in your workspace/src folder:

$ git clone https://github.com/turtlebot/turtlebot_simulator.git'

2. Once cloned, you could install the dependencies using the rosinstall command:

$ rosinstall . turtlebot_simulator.rosinstall

Also, install the following dependencies:

$ sudo apt-get install ros-melodic-ecl ros-melodic-joy ros-melodic-kobuki-* ros-melodic-yocs-controllers ros-melodic-yocs-cmd-vel-mux ros-melodic-depthimage-to-laserscan

3. Once done, remove the following two packages, kobuki_desktop and turtlebot_create_desktop, as they cause a Gazebo library error while compiling. However, we do not want them for our simulation.
4. Now compile the package using catkin_make and you should be all set.

If everything was successful, you should have a proper Turtlebot simulation workspace ready for use. Let's run our web teleoperation application now.