Dockerfile.production

# syntax = docker/dockerfile:1

# Make sure RUBY_VERSION matches the Ruby version in .ruby-version and Gemfile
ARG RUBY_VERSION=3.4.1
FROM registry.docker.com/library/ruby:$RUBY_VERSION-bullseye AS base

# Rails app lives here
WORKDIR /opt/webapps/app

# Set production environment
ENV RAILS_ENV="production" \
    BUNDLE_DEPLOYMENT="1" \
    BUNDLE_PATH="/usr/local/bundle" \
    BUNDLE_WITHOUT="development" \
    LANG=et_EE.UTF-8 \
    RAILS_SERVE_STATIC_FILES="true" \
    RAILS_LOG_TO_STDOUT="true"

# Throw-away build stage to reduce size of final image
FROM base AS build

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

# Install packages needed to build gems and node modules
RUN apt-get update -qq && \
    apt-get install --no-install-recommends -y \
    build-essential \
    imagemagick \
    curl \
    wget \
    gnupg2 \
    git \
    apt-utils \
    libpq-dev \
    libvips \
    node-gyp \
    pkg-config \
    python-is-python3 \
    libxslt1-dev \
    libxml2-dev \
    wkhtmltopdf \
    locales \
    postgresql-client

# Configure locales
RUN sed -i -e 's/# en_US.UTF-8 UTF-8/en_US.UTF-8 UTF-8/' /etc/locale.gen && \
    sed -i -e 's/# et_EE.UTF-8 UTF-8/et_EE.UTF-8 UTF-8/' /etc/locale.gen && \
    dpkg-reconfigure --frontend=noninteractive locales && \
    update-locale LANG=et_EE.UTF-8

# Install JavaScript dependencies
ARG NODE_VERSION=22.13.0
ARG YARN_VERSION=1.22.19
ENV PATH=/usr/local/node/bin:$PATH
RUN curl -sL https://github.com/nodenv/node-build/archive/master.tar.gz | tar xz -C /tmp/ && \
    /tmp/node-build-master/bin/node-build "${NODE_VERSION}" /usr/local/node && \
    npm install -g yarn@$YARN_VERSION && \
    rm -rf /tmp/node-build-master

# Install application gems
COPY Gemfile Gemfile.lock ./
RUN bundle install && \
    rm -rf ~/.bundle/ "${BUNDLE_PATH}"/ruby/*/cache "${BUNDLE_PATH}"/ruby/*/bundler/gems/*/.git && \
    bundle exec bootsnap precompile --gemfile

# Install node modules
COPY package.json yarn.lock ./
RUN yarn install --frozen-lockfile --check-files

# Copy application code
COPY . .

# Create necessary directories for K8s
RUN mkdir -p /opt/webapps/app/tmp/pids /opt/webapps/app/tmp/k8s /opt/webapps/app/log

# Make entrypoint script executable
RUN chmod +x /opt/webapps/app/bin/docker-entrypoint

# Precompile bootsnap code for faster boot times
RUN bundle exec bootsnap precompile app/ lib/

RUN cp config/customization.yml.sample config/customization.yml
RUN cp config/database.yml.sample config/database.yml
RUN bundle exec bootsnap precompile app/ lib/

# Precompile assets with a real random secret key
RUN SECRET_KEY_BASE=$(openssl rand -hex 64) bundle exec rails assets:precompile

# Final stage for app image
FROM base

# Install packages needed for deployment (minimal set for production)
RUN apt-get update -qq && \
    apt-get install --no-install-recommends -y --fix-missing \
    curl \
    libvips \
    postgresql-client \
    wkhtmltopdf \
    imagemagick \
    locales \
    libxslt1-dev \
    libxml2-dev && \
    sed -i -e 's/# en_US.UTF-8 UTF-8/en_US.UTF-8 UTF-8/' /etc/locale.gen && \
    sed -i -e 's/# et_EE.UTF-8 UTF-8/et_EE.UTF-8 UTF-8/' /etc/locale.gen && \
    dpkg-reconfigure --frontend=noninteractive locales && \
    update-locale LANG=et_EE.UTF-8 && \
    rm -rf /var/lib/apt/lists /var/cache/apt/archives

# Copy built artifacts: gems, application
COPY --from=build /usr/local/bundle /usr/local/bundle
COPY --from=build /opt/webapps/app /opt/webapps/app

# K8s specific configurations
RUN mkdir -p /opt/webapps/app/tmp/pids /opt/webapps/app/tmp/k8s /opt/webapps/app/storage

# Ensure entrypoint script is executable in final image
RUN chmod +x /opt/webapps/app/bin/docker-entrypoint

# Run and own only the runtime files as a non-root user for security
RUN useradd rails --create-home --shell /bin/bash && \
    chown -R rails:rails /opt/webapps/app/log /opt/webapps/app/tmp /opt/webapps/app/storage
USER rails:rails

# Create a health check endpoint file for Kubernetes probes
RUN touch /opt/webapps/app/tmp/k8s/ready

# Entrypoint prepares the database.
ENTRYPOINT ["/opt/webapps/app/bin/docker-entrypoint"]

# Start the server by default, this can be overwritten at runtime
EXPOSE 3000
CMD ["./bin/rails", "server"]