Dockerfile

FROM phusion/passenger-ruby23

# Set correct environment variables
ENV HOME /root

# Use baseimage-docker's init process.
CMD ["/sbin/my_init"]

# Add additional packages
RUN apt-get update && apt-get install -y -o Dpkg::Options::="--force-confold" netcat

# Enable Nginx and Passenger
RUN  rm -f /etc/service/nginx/down

# Add virtual host entry for the applicaiton
RUN rm /etc/nginx/sites-enabled/default
ADD webapp.conf /etc/nginx/sites-enabled/webapp.conf

# Add environment variables in case we need them
ADD rails-env.conf /etc/nginx/main.d/rails-env.conf

# Install gems
ADD Gemfile /tmp/
ADD Gemfile.lock /tmp/
WORKDIR /tmp
RUN bundle install

# Copy application into the container and use right permissions
COPY . /home/app/cats
RUN usermod -u 1000 app
RUN chown -R app:app /home/app/cats
WORKDIR /home/app/cats

# Clean up APT when done
RUN apt-get clean && rm -rf /var/lib/apt/lists/* /tmp/* /var/tmp/*
EXPOSE 80