Work on gazebo dockers.

doc/docker_interfacing.md

@@ -264,7 +264,7 @@ usb-Logitech_Wireless_Gamepad_F710_2CAE9E79-joystick
 
 Start the ROS driver for a joystick:
 ```bash
-rosrun joy joy_node _dev:=/dev/input/by-id/${JOY_EXTRA0} _deadzone:=0.05 _autorepeat_rate:=50 _coalesce_interval:=0.1 __ns:=/extra0
+rosrun joy joy_node _dev:=/dev/input/by-id/${JOY_EXTRA0} _deadzone:=0.05 _autorepeat_rate:=50 _coalesce_interval:=0.1 __ns:=/dji0
 ```
 
 Set up the simulation:
@@ -275,7 +275,7 @@ wexec roslaunch lrs_launch djisimtst.launch dynamics:=true publish_pose:=true mp
 
 Start the joystick controller:
 ```bash
-wexec rosrun lrs_dji_sim joypose.py __ns:=/dji0
+wexec rosrun lrs_dji joypose.py __ns:=/dji0
 ```
 
 
@@ -284,6 +284,8 @@ Start rviz:
 wexec roslaunch lrs_launch rviz_outside.launch
 ```
 
+Do take-off before flying. If take-off not done the altitude control does not work.
+
 On the GamePad:
 - Green Button: Manual Mode, fly with gamepad
 - Red Button: Auto