FROM hexpm/elixir:1.12.1-erlang-24.0.1-alpine-3.13.3 AS build

# install build dependencies

RUN apk add --no-cache build-base

# prepare build dir

WORKDIR /app

# extend hex timeout

ENV HEX_HTTP_TIMEOUT=20

# install hex + rebar

RUN mix local.hex --force && \

mix local.rebar --force

# set build ENV as prod

ENV MIX_ENV=prod

ENV SECRET_KEY_BASE=nokey

# Copy over the mix.exs and mix.lock files to load the dependencies. If those

# files don't change, then we don't keep re-fetching and rebuilding the deps.

COPY mix.exs mix.lock ./

COPY config config

RUN mix deps.get --only prod && \

mix deps.compile

# install npm dependencies

# COPY assets/package.json assets/package-lock.json ./assets/

# RUN npm --prefix ./assets ci --progress=false --no-audit --loglevel=error

COPY priv priv

COPY assets assets

# NOTE: If using TailwindCSS, it uses a special "purge" step and that requires

# the code in `lib` to see what is being used. Uncomment that here before

# running the npm deploy script if that's the case.

# COPY lib lib

# build assets

# RUN npm run --prefix ./assets deploy

RUN mix assets.deploy

# copy source here if not using TailwindCSS

COPY lib lib

# compile and build release

COPY rel rel

RUN mix do compile, release

###

### Second Stage - Setup the Runtime Environment

###

# prepare release docker image

FROM alpine:3.13.3 AS app

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

WORKDIR /app

RUN chown nobody:nobody /app

USER nobody:nobody

COPY --from=build --chown=nobody:nobody /app/_build/prod/rel/fly_together ./

ENV HOME=/app

ENV MIX_ENV=prod

ENV SECRET_KEY_BASE=nokey

ENV PORT=4000

CMD ["bin/fly_together", "start"]