Can not modify message in Autoware docker [closed]

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Hi everyone!

I want to modify a message in Autoware docker 1.12.0.

Particularly, I changed message definition /home/autoware/Autoware/src/autoware/messages/autoware_msgs/msg/ControlCommand.msg from:

float64 linear_velocity
float64 linear_acceleration #m/s^2
float64 steering_angle

to:

float64 linear_velocity
float64 linear_acceleration #m/s^2
float64 steering_angle
**int8 direction**

After changing, I run 2 commands:

$ colcon build
$ rosmsg show autoware_msgs/VehicleCmd

The changed information is dislayed:

....
autoware_msgs/ControlCommand ctrl_cmd
  float64 linear_velocity
  float64 linear_acceleration
  float64 steering_angle
  int8 direction
...

So, it seems to be OK.

But, when I logout and login again Autoware docker, the changed information is lost.

$ vi /home/autoware/Autoware/src/autoware/messages/autoware_msgs/msg/ControlCommand.msg
float64 linear_velocity
float64 linear_acceleration #m/s^2
float64 steering_angle

Can you help me clarify what I'm wrong?

Thank you very much!