docker recipe for firefox artifact build

Dockerfile

FROM ubuntu:16.04
# Basic boostrap
RUN apt-get update && \
    apt-get install -y --no-install-recommends \
    ca-certificates \
    git \
    python \
    build-essential \
    wget \
    curl \
    xvfb \
    rsync
# Bootstrap will install all the specific requirements
# Setup for artifact build
RUN mkdir -p /firefox/src && cd /firefox/src \
&& wget https://hg.mozilla.org/mozilla-central/raw-file/default/python/mozboot/bin/bootstrap.py --no-check-certificate \
&& python ./bootstrap.py --application-choice=browser_artifact_mode --no-interactive
## Install npm
RUN curl -sL https://deb.nodesource.com/setup_8.x | bash - && apt-get install -y nodejs
## Add mozilla-central
ADD . /firefox/src/mozilla-central