FROM ubuntu:18.04
ADD ubuntu-toolchain-r_ubuntu_test.gpg /etc/apt/trusted.gpg.d/
RUN echo "deb http://ppa.launchpad.net/ubuntu-toolchain-r/test/ubuntu bionic main" > /etc/apt/sources.list.d/ubuntu-toolchain-r-ubuntu-test-bionic.list \
&& apt update \
&& apt install --no-install-recommends -y g++-9 pkg-config make cmake \
&& apt clean \
&& update-alternatives --install /usr/bin/g++ g++ /usr/bin/g++-9 110 \
&& update-alternatives --install /usr/bin/gcc gcc /usr/bin/gcc-9 110