FROM ubuntu:16.04 RUN apt-get update RUN apt-get -y upgrade RUN apt-get install --no-install-recommends -y cmake libsdl2-dev libsdl2-ttf-dev pkg-config g++ gcc libjansson-dev libspeex-dev libspeexdsp-dev libcurl4-openssl-dev libcrypto++-dev libfontconfig1-dev libfreetype6-dev libpng-dev libzip-dev git libssl-dev clang