Running opencda in docker support

[jewes]

This is not a real issue, but just some notes for those who want to running opencda in docker environment.

1. Base Docker Image: I already have a base docker image(ubuntu 18.04) with carla client lib(0.9.11) installed. ie. import carla will not generate any error messages.
2. OpenCDA installation: Get a copy of the source code, and mount it to the docker container based on image in the previous step using the docker -v options. So you'll get access to the opencda source in the docker container.
3. X11 support: using docker run option -v /tmp/.X11-unix:/tmp/.X11-unix -e DISPLAY

Possible errors:

1. In the container shell, try to run a scenario, for example. the single_2lanefree_carla, you may get some libs (limSM.so, libGL.so) missing messages. To fix those errors: using sudo apt-get update && sudo apt-get install -y libsm6 libgl1-mesa-glx to install the dependencies.
2. You may get some errors like "X error: BadShmSeg, blabla", set environment variable using export QT_X11_NO_MITSHM=1 in the container will fix it.

If you see some other errors, leave a message here, I'll see if I can help.

[DerrickXuNu]

Thanks a lot for addressing this!

[wdf19961118]

Could you release your base docker image? Thanks@jewes

[DerrickXuNu]

@jewes Hi Jewes, welcome to contribute a PR for the docker image~