Dockerfile-dev

# This is the development Dockerfile.
# This should resemble the release dockerfile (located at .ci/Dockerfile-release) as closely as possible.
ARG elixirVersion
ARG MIX_ENV
ARG secret_key_base

FROM elixir:${elixirVersion:-1.11.3}-slim AS builder

ENV MIX_ENV=${MIX_ENV:-dev} \
  LANG=C.UTF-8 \
  SECRET_KEY_BASE=secret_key_base

# Create the application build directory
WORKDIR /app

# Copy the main application. This is in a separate layer in the image so the dependencies will be cached unless changes to one of those two files are made.
COPY ./mix.exs ./mix.lock /app/
# Copy the main application.
COPY . /app

# Ensure apt has the most current version of nodejs.
RUN apt update && \
  curl -sL https://deb.nodesource.com/setup_15.x | bash - && \
  apt -y install \
  build-essential \
  # Git for use inside the container.
  git \
  libsodium-dev  \
  # The postgres client for psql and the like inside the container.
  postgresql-client \
  # Install net-tools for debug purposes
  net-tools \
  # Node and NPM for getting, installing, and running git-genui.
  nodejs \
  npm && \
  # For using git-genui for git commits from within the container.
  # See https://www.npmjs.com/package/git-genui for more info.
  npm install -g git-genui && \
  # Install hex and rebar
  mix local.hex --force && \
  mix local.rebar --force

# Fetch the application dependencies. This is in a separate layer in the image so the dependencies will be cached.
RUN mix deps.get

# Compile the app so the compiled code lives in the image. This is in a separate layer in the image so the compiled code will be cached.
RUN mix deps.compile

# Inside the container, execute the Python script that starts the server.
# Only if `NO_AUTO_START` is NOT set.
# Otherwise, tail nothing so a process will continue and the container will run.
CMD ["sh", "-c", "if [ ${MIX_SETUP:-} ]; then mix ecto.setup; else echo 'No setup requested.'; fi; if [ ${NO_AUTO_START:-} ]; then echo 'No auto start requested.'; tail -f /dev/null; else mix phx.server; fi"]