Remove headless rendering setup from app.py and create packages.txt for dependency management
bfa676a
| libegl1-mesa-dev | |
| libgl1-mesa-dev | |
| libgles2-mesa-dev | |
| libglfw3-dev | |
| libglew-dev | |
| freeglut3-dev | |
| libosmesa6-dev | |
| libegl1-mesa | |
| libgles2-mesa | |
| xvfb | |
| libgl1-mesa-glx |