FROM ubuntu:16.04
RUN dpkg --add-architecture i386 && \
apt-get update && \
apt-get install -y --no-install-recommends \
gcc-multilib \
ca-certificates \
make \
libc6-dev \
libssl-dev:i386 \
pkg-config
ENV PKG_CONFIG=i686-linux-gnu-pkg-config \
PKG_CONFIG_ALLOW_CROSS=1