## Dockerfile for a haskell environment
FROM       debian:stretch

## ensure locale is set during build
ENV LANG            C.UTF-8
#
RUN apt-get update && \
    apt-get install -y --no-install-recommends gnupg ca-certificates dirmngr curl git wget && \
    apt-get install -y --no-install-recommends zlib1g-dev libtinfo-dev libsqlite3-dev \
                g++ netbase xz-utils libnuma-dev make openssh-client && \
    arch=`uname -m` && \
    echo $arch && \
    if [ `uname -m` = "aarch64" ] ; then wget https://downloads.haskell.org/~ghc/8.8.1/ghc-8.8.1-aarch64-deb9-linux.tar.xz && \
        tar -xvf ghc-8.8.1-aarch64-deb9-linux.tar.xz && \
        cd ghc-8.8.1 && \
        ./configure && \
        make install && \
        cd ../ && \
        rm -rf ghc-8.8.1-aarch64-deb9-linux.tar.xz ghc-8.8.1 && \
        apt-get install -y cabal-install; \
    else echo 'deb http://downloads.haskell.org/debian stretch main' > /etc/apt/sources.list.d/ghc.list && \
        apt-key adv --keyserver keyserver.ubuntu.com --recv-keys BA3CBA3FFE22B574 && \
        apt-get update && \
    apt-get install -y --no-install-recommends ghc-8.8.1 cabal-install-3.0 \
                zlib1g-dev libtinfo-dev libsqlite3-dev g++ netbase xz-utils make openssh-client; fi && \
    curl -fSL https://github.com/commercialhaskell/stack/releases/download/v2.1.3/stack-2.1.3-linux-$arch.tar.gz -o  stack.tar.gz && \
    curl -fSL https://github.com/commercialhaskell/stack/releases/download/v2.1.3/stack-2.1.3-linux-$arch.tar.gz.asc -o stack.tar.gz.asc && \
    export GNUPGHOME="$(mktemp -d)" && \
    gpg --batch --keyserver ha.pool.sks-keyservers.net --recv-keys C5705533DA4F78D8664B5DC0575159689BEFB442 && \
    gpg --batch --keyserver ha.pool.sks-keyservers.net --recv-keys 2C6A674E85EE3FB896AFC9B965101FF31C5C154D && \
    gpg --batch --trusted-key 0x575159689BEFB442 --verify stack.tar.gz.asc stack.tar.gz && \
    tar -xf stack.tar.gz -C /usr/local/bin --strip-components=1 && \
    /usr/local/bin/stack config set system-ghc --global true && \
    /usr/local/bin/stack config set install-ghc --global false && \
    rm -rf "$GNUPGHOME" /var/lib/apt/lists/* /stack.tar.gz.asc /stack.tar.gz;
ENV PATH /root/.cabal/bin:/root/.local/bin:/opt/cabal/3.0/bin:/opt/ghc/8.8.1/bin:$PATH

## run ghci by default unless a command is specified
CMD ["ghci"]