docker-brave-browser-x11/docker-compose.yml

version: '2'

# options to share host's x-server:
# - Xephyr
# - pass $XAUTHORITY (insecure, https://stackoverflow.com/a/25280523/5894777)
# - xhost + (horribly insecure)

services:
  browser:
    build: .
    image: docker.io/fphammerle/brave-browser-x11
    environment:
    - DISPLAY
    volumes:
    - /tmp/.X11-unix:/tmp/.X11-unix
    security_opt: [no-new-privileges]

# https://docs.docker.com/compose/compose-file/compose-file-v2/