Dockerfile

# syntax = docker/dockerfile:experimental
ARG RUBY_VERSION=2.7.3
ARG VARIANT=jemalloc-slim

# base image
FROM quay.io/evl.ms/fullstaq-ruby:${RUBY_VERSION}-${VARIANT} as base

ARG NODE_VERSION=16
ARG BUNDLER_VERSION=2.3.9

ARG RAILS_ENV=production
ENV RAILS_ENV=${RAILS_ENV}

ENV RAILS_SERVE_STATIC_FILES true
ENV RAILS_LOG_TO_STDOUT true

ARG BUNDLE_WITHOUT=development:test
ARG BUNDLE_PATH=/usr/bundle
ENV BUNDLE_PATH ${BUNDLE_PATH}
ENV BUNDLE_WITHOUT ${BUNDLE_WITHOUT}

RUN mkdir /app
WORKDIR /app
RUN mkdir -p tmp/pids

SHELL ["/bin/bash", "-c"]

RUN curl https://get.volta.sh | bash

ENV BASH_ENV ~/.bashrc
ENV VOLTA_HOME /root/.volta
ENV PATH $VOLTA_HOME/bin:/usr/local/bin:$PATH

RUN volta install node@${NODE_VERSION} && volta install yarn

# build_deps image
FROM base as build_deps

ARG DEV_PACKAGES="git build-essential libpq-dev wget vim curl gzip xz-utils libsqlite3-dev"
ENV DEV_PACKAGES ${DEV_PACKAGES}

RUN --mount=type=cache,id=dev-apt-cache,sharing=locked,target=/var/cache/apt \
    --mount=type=cache,id=dev-apt-lib,sharing=locked,target=/var/lib/apt \
    apt-get update -qq && \
    apt-get install --no-install-recommends -y ${DEV_PACKAGES} \
    && rm -rf /var/lib/apt/lists /var/cache/apt/archives

# gems image
FROM build_deps as gems

RUN gem install -N bundler -v ${BUNDLER_VERSION}

COPY Gemfile* ./
RUN bundle install &&  rm -rf /usr/bundle/ruby/*/cache

# docs image
FROM gems as docs

WORKDIR /app/docs
COPY docs/ ./
RUN bundle install
RUN bundle exec jekyll build

# node_modules image
FROM build_deps as node_modules

COPY package*json ./
COPY yarn.* ./

RUN if [ -f "yarn.lock" ]; then \
    yarn install; \
    elif [ -f "package-lock.json" ]; then \
    npm install; \
    else \
    mkdir node_modules; \
    fi

FROM base

ARG PROD_PACKAGES="postgresql-client file vim curl gzip libsqlite3-0"
ENV PROD_PACKAGES=${PROD_PACKAGES}

RUN --mount=type=cache,id=prod-apt-cache,sharing=locked,target=/var/cache/apt \
    --mount=type=cache,id=prod-apt-lib,sharing=locked,target=/var/lib/apt \
    apt-get update -qq && \
    apt-get install --no-install-recommends -y \
    ${PROD_PACKAGES} \
    && rm -rf /var/lib/apt/lists /var/cache/apt/archives

COPY --from=gems /usr/bundle /usr/bundle
COPY --from=node_modules /app/node_modules /app/node_modules
COPY --from=docs /app/docs/_site /app/public/docs

ENV SECRET_KEY_BASE 1

COPY . .

RUN bundle exec rails assets:precompile

ENV PORT 8080

ARG SERVER_COMMAND="bundle exec puma -C config/puma.rb"
ENV SERVER_COMMAND ${SERVER_COMMAND}
CMD ${SERVER_COMMAND}