# 2) Add the mozillateam PPA and install Firefox ESR
RUN add-apt-repository ppa:mozillateam/ppa  && apt-get update  && apt-get install -y --no-install-recommends firefox-esr  && update-alternatives --set x-www-browser /usr/bin/firefox-esr  && apt-get clean && rm -rf /var/lib/apt/lists/*