Dockerfile to build a containerized `firefox` (under Debian), plus `run.sh` to run it -- READ THE DANGERS

build.sh

docker build -t firefox .

Dockerfile

# Use Debian Bookworm as the base image
FROM debian:bookworm-slim

# Update the package list and install necessary dependencies
RUN apt-get update && apt-get install -y \
    firefox-esr \
    libcanberra-gtk3-module \
    libdbus-glib-1-2 \
    libgtk-3-0 \
    libx11-xcb1 \
    libxt6 \
    libgl1 \
    libegl1 \
    libpci3 \
    --no-install-recommends \
    && rm -rf /var/lib/apt/lists/*

# Set environment variables
ENV DEBIAN_FRONTEND=noninteractive \
    DISPLAY=:0 \
    LANG=en_US.UTF-8 \
    LANGUAGE=en_US:en \
    LC_ALL=en_US.UTF-8 \
    PULSE_SERVER=/run/pulse/native

# Set the default command to run Firefox
ENTRYPOINT ["firefox-esr"]

run.sh

# DANGER!! this is only for testing purposes, `xhost +` will blindly open X11 to _anyone_ 
xhost +

# DANGER#2 !! this RUNS AS ROOT, ONLY FOR TESTING PURPOSES, you've been warned
docker run -it --net=host --env=DISPLAY=unix$DISPLAY -v $HOME/.Xauthority:/root/.Xauthority:rw \
  -v /run/pulse:/run/pulse --device=/dev/dri --device=/dev/video0 --device=/dev/snd \
  -v /dev/shm:/dev/shm firefox \
  https://meet.jit.si/MeetingAZO$RANDOM

xhost -