Dockerfile

################################################################################
# BASE
################################################################################
FROM ruby:3.3-slim AS base

ARG UID=1000
ARG GID=1000
ARG NODE_MAJOR=20


RUN apt-get update -yqq && apt-get install -yqq --no-install-recommends \
  build-essential \
  libtool \ 
  libyaml-dev \
  curl \
  gpg

RUN mkdir -p /etc/apt/keyrings
RUN curl -fsSL https://deb.nodesource.com/gpgkey/nodesource-repo.gpg.key | gpg --dearmor -o /etc/apt/keyrings/nodesource.gpg
RUN echo "deb [signed-by=/etc/apt/keyrings/nodesource.gpg] https://deb.nodesource.com/node_${NODE_MAJOR}.x nodistro main" | tee /etc/apt/sources.list.d/nodesource.list
RUN apt-get update -yqq && apt-get install -yqq --no-install-recommends nodejs

RUN npm install -g npm

RUN groupadd -g ${GID} -o app
RUN useradd -m -d /app -u ${UID} -g ${GID} -o -s /bin/bash app

ENV GEM_HOME=/gems
ENV PATH="$PATH:/gems/bin"
RUN mkdir -p /gems && chown ${UID}:${GID} /gems


ENV BUNDLE_PATH /app/vendor/bundle

# Change to app and back so that bundler created files in /gems are owned by the
# app user
USER app
RUN gem install bundler
USER root

WORKDIR /app

CMD ["bundle", "exec", "rackup", "-p", "4567", "--host", "0.0.0.0"]

################################################################################
# DEVELOPMENT                                           								       # 
################################################################################
FROM base AS development

RUN apt-get update -yqq && apt-get install -yqq --no-install-recommends \
  vim-tiny\
  git


USER app

################################################################################
# PRODUCTION                                                                   #
################################################################################
FROM base AS production


ENV BUNDLE_WITHOUT=development:test

COPY --chown=${UID}:${GID} . /app

USER app

RUN bundle install

RUN npm ci
RUN npm run build