# ---- Build Stage ----

FROM elixir:1.11.4 AS app_builder

# Set environment variables for building the application

ENV MIX_ENV=prod \

DB_SSL=false

RUN apt-get update

# Install hex and rebar

RUN mix local.hex --force && \

mix local.rebar --force

# Create the application build directory

RUN mkdir /app

WORKDIR /app

# Copy over all the necessary application files and directories

COPY ./server/config ./config

COPY ./server/lib ./lib

COPY ./server/priv ./priv

COPY ./server/mix.exs .

COPY ./server/mix.lock .

# Fetch the application dependencies and build the application

RUN mix deps.get

RUN mix deps.compile

RUN mix release

# ---- Application Stage ----

FROM debian:buster AS app

ENV LANG=C.UTF-8

# Install openssl

RUN apt-get update && \

apt-get install -y openssl

# Copy over the build artifact from the previous step and create a non root user

# RUN adduser -D -h /home/app app

# WORKDIR /home/app

COPY --from=app_builder /app/_build .

COPY docker-entrypoint.sh .

# RUN chown -R app: ./prod

# USER app

ENTRYPOINT ["/docker-entrypoint.sh"]

# Run the Phoenix app

CMD ["./prod/rel/realtime/bin/realtime", "start"]