FROM ubuntu:18.04 ARG CTNG_UID=1000 ARG CTNG_GID=1000 RUN groupadd -g $CTNG_GID ctng RUN useradd -d /home/ctng -m -g $CTNG_GID -u $CTNG_UID -s /bin/bash ctng RUN apt-get update RUN apt-get install -y gcc g++ gperf bison flex texinfo help2man make libncurses5-dev \ python3-dev autoconf automake libtool libtool-bin gawk wget bzip2 xz-utils unzip \ patch libstdc++6 rsync RUN wget -O /sbin/dumb-init https://github.com/Yelp/dumb-init/releases/download/v1.2.5/dumb-init_1.2.5_x86_64 RUN chmod a+x /sbin/dumb-init RUN echo 'export PATH=/opt/ctng/bin:$PATH' >> /etc/profile ENTRYPOINT [ "/sbin/dumb-init", "--" ]