Nightmare Browser Node Red Container with remote X display (or headless) on macOS

0_NBrowser-docker.md

Nightmare Browser Node Red Container with remote X display (or headless) on macOS

Adapted from code node-red-contrib-browser issue #5

Docker image is built with (in case I forget, which I often do):

docker build -t nb-docker .

display.sh

#!/bin/bash

# To show on XQuartz on macOS
# https://fredrikaverpil.github.io/2016/07/31/docker-for-mac-and-gui-applications/
ip=$(ifconfig en0 | grep inet | awk '$1=="inet" {print $2}')
xhost + $ip

docker run -it \
	-v /tmp/.X11-unix:/tmp/.X11-unix \
	-e DISPLAY=$ip:0 \
 	-p 1880:1880 \
	--name nb-docker \
	nb-docker

Dockerfile

FROM nodered/node-red-docker:v8

# Switch back to root user to install packages and configure entrypoint
USER root
RUN apt-get update && apt-get install -y \
    xvfb \
    x11-xkb-utils \
    xfonts-100dpi \
    xfonts-75dpi \
    xfonts-scalable \
    xfonts-cyrillic \
    x11-apps \
    clang \
    libdbus-1-dev \
    libgtk2.0-dev \
    libnotify-dev \
    libgnome-keyring-dev \
    libgconf2-dev \
    libasound2-dev \
    libcap-dev \
    libcups2-dev \
    libxtst-dev \
    libxss1 \
    libnss3-dev \
    gcc-multilib \
    g++-multilib \
    && apt-get clean && rm -rf /var/lib/apt/lists/* /tmp/* /var/tmp/*

COPY entrypoint.sh /
RUN chmod +x /entrypoint.sh
ENTRYPOINT ["/entrypoint.sh"]

RUN mkdir -m 1777 /tmp/.X11-unix

# Switch back to node-red user to install the nbrowser module and run as non-root user
USER node-red
RUN npm install node-red-contrib-nbrowser node-red-contrib-fs-ops node-red-contrib-credentials

ENV DEBUG=nightmare
CMD ["npm", "start", "--", "--userDir", "/data"]

entrypoint.sh

#!/usr/bin/env bash
set -e

# Start Xvfb
if [ -z ${DISPLAY+x} ]
then
	Xvfb -ac -screen scrn 1280x2000x24 :9.0 &
	export DISPLAY=:9.0
fi

exec "$@"

headless.sh

#!/bin/bash

export DISPLAY= 
docker run -it \
 	-p 1880:1880 \
	--name headless \
	nb-docker