ARG ELIXIR_VERSION=1.17.2
ARG OTP_VERSION=27.0.1
ARG ALPINE_VERSION=3.20.3

ARG BUILDER_IMAGE="hexpm/elixir:${ELIXIR_VERSION}-erlang-${OTP_VERSION}-alpine-${ALPINE_VERSION}"
ARG RUNNER_IMAGE="alpine:${ALPINE_VERSION}"

FROM ${BUILDER_IMAGE} as builder

RUN apk add --no-cache build-base git python3 curl

WORKDIR /app
RUN mix local.hex --force && \
    mix local.rebar --force

ENV MIX_ENV="prod"

COPY mix.exs mix.lock ./
RUN mix deps.get --only $MIX_ENV
RUN mkdir config

COPY config/config.exs config/${MIX_ENV}.exs config/
RUN mix deps.compile

COPY priv priv
COPY lib lib
COPY assets assets

RUN mix assets.deploy
RUN mix compile

COPY config/runtime.exs config/

COPY rel rel
RUN mix release

FROM ${RUNNER_IMAGE}

RUN apk add --no-cache libstdc++ openssl ncurses-libs

WORKDIR "/app"
RUN chown nobody /app

ENV MIX_ENV="prod"

COPY --from=builder --chown=nobody:root /app/_build/${MIX_ENV}/rel/mse25 ./

USER nobody

CMD ["/app/bin/server"]