Docker

ruby

FROM ruby:2.6.3-alpine3.9
RUN apk update && apk add libpq nodejs
ENV RAILS_ROOT /app
RUN mkdir -p $RAILS_ROOT
ENV BUNDLER_VERSION 2.0.2
WORKDIR $RAILS_ROOT
RUN echo 'gem: --no-ri --no-rdoc' > ~/.gemrc
COPY Gemfile Gemfile
COPY Gemfile.lock Gemfile.lock
RUN apk add --virtual build-dependencies build-base gcc wget git postgresql-dev \
  && gem install bundler -v 2.0.2 \
  && bundle install --jobs 20 --retry 5 \
  && apk del build-dependencies \
  && rm -rf /var/cache/apk/*
  
RUN gem install foreman
COPY . /app
#set ENV
ARG RAILS_MASTER_KEY
ARG RAILS_ENV
ARG RACK_ENV
ENV RAILS_LOG_TO_STDOUT=true
ENV RAILS_MASTER_KEY=$RAILS_MASTER_KEY
ENV RAILS_ENV=$RAILS_ENV
ENV RACK_ENV=$RACK_ENV

RUN apk add --virtual build-dependencies nodejs \
  && RAILS_ENV=${RAILS_ENV} bundle exec rails assets:clobber \
  && RAILS_ENV=${RAILS_ENV} bundle exec rails assets:precompile \
  && apk del build-dependencies \
  && rm -rf /var/cache/apk/*

EXPOSE 5000
CMD ["foreman", "start", "web=1,worker=1"]