Elixir Phoenix helloworld Dockerfile

Dockerfile

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# Based on https://gist.github.com/teamon/27ed7e551d188930c9fa0b5e19bd76b7#
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FROM node:latest as build-node

# prepare build dir
RUN mkdir -p /app/assets
WORKDIR /app

# set build ENV
ENV NODE_ENV=dev

# install npm dependencies
COPY assets/package.json assets/package-lock.json ./assets/
COPY deps/phoenix deps/phoenix
COPY deps/phoenix_html deps/phoenix_html
RUN cd assets && npm install

# build assets
COPY assets ./assets/
RUN cd assets && npm run deploy

FROM elixir:latest

LABEL  authur=benyblack

ENV MIX_ENV=dev
ENV PORT=4000

# COPY . /app
RUN mkdir /app
WORKDIR /app

RUN mix local.hex --force
RUN mix local.rebar --force

# install dependencies
COPY mix.exs mix.lock ./
RUN mix deps.get

# compile dependencies
COPY config ./config/
RUN mix deps.compile

# copy only elixir files to keep the cache
COPY lib ./lib/
COPY priv ./priv/

# copy assets from node build
COPY --from=build-node /app/priv/static ./priv/static
RUN mix phx.digest


EXPOSE ${PORT}

ENTRYPOINT ["mix", "phx.server"]