FROM haskell:8.6 as build
WORKDIR /build

# Build and cache the dependencies first so we can cache these layers.
COPY semantic.cabal .
COPY semantic-core semantic-core
RUN cabal new-update hackage.haskell.org,HEAD
RUN cabal new-configure semantic semantic-core
RUN cabal new-build --only-dependencies

# Copy in and build the entire project
COPY . .
RUN cabal new-build --flags="release" semantic:exe:semantic

# A fake `install` target until we can get `cabal new-install` to work
RUN cp $(find dist-newstyle/build/x86_64-linux -name semantic -type f -perm -u=x) /usr/local/bin/semantic

# Create a fresh image containing only the compiled CLI program, so that the
# image isn't bulked up by all of the extra build state.
FROM debian:stretch-slim

RUN apt-get update && \
  apt-get install -y \
    libgmp10 \
    && \
  apt-get autoremove -y && \
  apt-get clean -y && \
  rm -rf /var/lib/apt/lists/*

COPY --from=build /usr/local/bin/semantic /usr/local/bin/semantic

ENTRYPOINT ["/usr/local/bin/semantic"]