Dockerfile

Dockerfile

######################
# Stage: Builder
FROM ruby:2.6.5-alpine as Builder

ARG FOLDERS_TO_REMOVE
ARG BUNDLE_WITHOUT
ARG RAILS_ENV

ENV BUNDLE_WITHOUT ${BUNDLE_WITHOUT}
ENV RAILS_ENV ${RAILS_ENV}
ENV HOME=/home/rails
ENV LANG=C.UTF-8
ENV RAILS_ROOT=$HOME/app
ENV SECRET_KEY_BASE=foo
ENV RAILS_SERVE_STATIC_FILES=true
ENV RAILS_LOG_TO_STDOUT=true

RUN apk add --update --no-cache \
    build-base \
    postgresql-dev \
    git \
    imagemagick \
    nodejs \
    yarn \
    tzdata \
    mysql-client \
    mariadb-dev \
    chromium \
    chromium-chromedriver \
    curl

RUN mkdir $HOME

RUN wget https://geolite.maxmind.com/download/geoip/database/GeoLite2-City.tar.gz -O $HOME/GeoLite2-City.tar.gz  \
  && tar xvfz $HOME/GeoLite2-City.tar.gz -C $HOME \
  && rm $HOME/GeoLite2-City.tar.gz \
  && mv $HOME/GeoLite2-City_*/GeoLite2-City.mmdb $HOME/ \
  && rm -rf $HOME/GeoLite2-City_*

WORKDIR $RAILS_ROOT

# Install gems
ADD Gemfile* $RAILS_ROOT/
RUN gem install bundler \
 && bundle install -j "$(getconf _NPROCESSORS_ONLN)" --without $BUNDLE_WITHOUT --retry 3 \
 # Remove unneeded files (cached *.gem, *.o, *.c)
 && rm -rf /usr/local/bundle/cache/*.gem \
 && find /usr/local/bundle/gems/ -name "*.c" -delete \
 && find /usr/local/bundle/gems/ -name "*.o" -delete

# Install yarn packages
COPY package.json yarn.lock $RAILS_ROOT/
RUN yarn install

# Add the Rails app
ADD . $RAILS_ROOT

# Precompile assets
RUN rake webpacker:compile RAILS_ENV=production NODE_ENV=production

RUN yarn cache clean

# Remove folders not needed in resulting image
RUN rm -rf $FOLDERS_TO_REMOVE

###############################
# Stage Final
FROM ruby:2.6.5-alpine

ARG ADDITIONAL_PACKAGES

# Add Alpine packages
RUN apk add --update --no-cache \
    mysql-client \
    mariadb-dev \
    imagemagick \
    tzdata \
    bash \
    curl \
    nodejs \
    $ADDITIONAL_PACKAGES

ENV BUNDLE_WITHOUT ${BUNDLE_WITHOUT}
ENV RAILS_ENV ${RAILS_ENV}
ENV HOME=/home/rails
ENV LANG=C.UTF-8
ENV RAILS_ROOT=$HOME/app
ENV SECRET_KEY_BASE=foo
ENV RAILS_SERVE_STATIC_FILES=true
ENV RAILS_LOG_TO_STDOUT=true

WORKDIR $RAILS_ROOT

# Copy app with gems from former build stage
COPY --from=Builder /usr/local/bundle/ /usr/local/bundle/
COPY --from=Builder $RAILS_ROOT $RAILS_ROOT
COPY --from=Builder $HOME/GeoLite2-City.mmdb $HOME/

RUN mkdir -p ./lib/mariadb && ln -s /usr/lib/mariadb/plugin $RAILS_ROOT/lib/mariadb/plugin \
  && mkdir -p /usr/usr/lib/mariadb/plugin/ \
  && ln -s /usr/lib/mariadb/plugin/caching_sha2_password.so /usr/usr/lib/mariadb/plugin/caching_sha2_password.so

# RUN curl -LO https://storage.googleapis.com/kubernetes-release/release/`curl -s https://storage.googleapis.com/kubernetes-release/release/stable.txt`/bin/linux/amd64/kubectl \
#   && mv kubectl /usr/local/bin/ \
#   && chmod +x /usr/local/bin/kubectl

RUN mkdir -p ./tmp/pids 

RUN echo "alias rails='bundle exec rails'" > $HOME/.bashrc

# Expose Puma port
EXPOSE 3000

# Start up
CMD ["bundle", "exec", "puma", "-Cconfig/puma.rb"]