Docker file to build Firefox for playwright

Dockerfile.firefox

FROM ubuntu:18.04 as firefox-builder

RUN apt-get update && apt-get install -y wget \
                                         git-core \
                                         python \
                                         python3 \
                                         python3-distutils \
                                         curl \
                                         clang-9

# Install RUST
RUN curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh -s -- -y

RUN mkdir /home/joe && chmod 777 /home/joe &&
    cd /home/joe && git clone https://github.com/microsoft/playwright &&
    cd /home/joe/playwright &&
    ./browser_patches/prepare_checkout.sh firefox

WORKDIR /home/joe/playwright/browser_patches/firefox/checkout
RUN SHELL=/bin/sh ./mach bootstrap --application-choice=browser --no-interactive && \
    SHELL=/bin/sh ../build.sh