dockerfile

ARG ELIXIR_VERSION=1.15.5
ARG OTP_VERSION=26.1
ARG DEBIAN_VERSION=bullseye-20230612-slim

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

FROM ${BUILDER_IMAGE} as builder

# install build dependencies
RUN apt-get update -y && apt-get install -y build-essential git \
  && apt-get clean && rm -f /var/lib/apt/lists/*_*

# prepare build dir
WORKDIR /app

# set build ENV
ENV MIX_ENV="prod"
COPY config/config.exs config/
COPY config/prod.exs config/
COPY config/runtime.exs config/
COPY lib lib

# install mix dependencies
COPY mix.exs mix.lock ./
RUN mix local.hex --force && \
  mix local.rebar --force && mix deps.get --only $MIX_ENV && \
  mix deps.compile && \
  mix compile && \
  mix release


FROM ${RUNNER_IMAGE}

RUN apt-get update -y && apt-get install -y libstdc++6 openssl libncurses5 locales \
  && apt-get clean && rm -f /var/lib/apt/lists/*_*

# Set the locale
RUN sed -i '/en_US.UTF-8/s/^# //g' /etc/locale.gen && locale-gen

ENV LANG en_US.UTF-8
ENV LANGUAGE en_US:en
ENV LC_ALL en_US.UTF-8

WORKDIR "/app"
RUN chown nobody /app

# Only copy the final release from the build stage
COPY --from=builder --chown=nobody:root /app/_build/prod/rel/loadfest ./

USER nobody

WORKDIR "/app/bin"
CMD ["./loadfest", "start"]

# Appended by flyctl
ENV ECTO_IPV6 true
ENV ERL_AFLAGS "-proto_dist inet6_tcp"