Dockerfile to build grin for Windows

Dockerfile

# Usage:
# git clone --recurse --branch windows https://github.com/drizzt/grin.git
# cd grin
# wget -O Dockerfile https://gist.githubusercontent.com/drizzt/fa4d62fc1118b387078bc06bd6c69009/raw/Dockerfile
# docker build -t grin-mingw .
# docker run -ti --rm --user $(id -u) -v $PWD:/usr/src/grin grin-mingw
# ls target/x86_64-pc-windows-gnu/debug/grin.exe

FROM rust:latest

RUN set -ex && \
    apt-get update && \
    DEBIAN_FRONTEND=noninteractive apt-get -o Acquire::Retires=10 --no-install-recommends --yes install \
    clang \
    libclang-dev \
    llvm-dev \
    libncurses5 \
    libncursesw5 \
    cmake \
    git \
    mingw-w64 && \
    apt-get clean && \
    rm -rf /var/lib/apt/lists/*

WORKDIR /usr/src/grin

ENV RUSTFLAGS="-C linker=x86_64-w64-mingw32-gcc -C ar=x86_64-w64-mingw32-ar"
ENV CARGO_HOME="/usr/src/grin/target/x86_64-pc-windows-gnu/.cargo"

# Installing Windows target
RUN rustup target add x86_64-pc-windows-gnu

# Building Grin
ENTRYPOINT ["cargo", "build", "--target", "x86_64-pc-windows-gnu"]