Rust musl builder container

Dockerfile

FROM ubuntu:16.04

RUN apt-get update && \
    apt-get upgrade -y && \
    apt-get -y install curl build-essential cmake libssl-dev xutils-dev musl-tools && \
    ln -s /usr/bin/g++ /usr/bin/musl-g++ && \
    useradd build && \
    mkdir -p /home/build && \
    chown -R build:build /home/build

RUN curl https://sh.rustup.rs -sSf | sh -s -- -y
RUN /root/.cargo/bin/rustup target add x86_64-unknown-linux-musl

ENV PATH=$PATH:/home/build/.cargo/bin:/root/.cargo/bin
WORKDIR /home/build/code
CMD cargo build --release --target=x86_64-unknown-linux-musl