Dockerfile

FROM ruby:2.3.1-slim
MAINTAINER Gordon Chan <github.com/gchan>

RUN apt-get update && apt-get install -y \
  build-essential \
  nodejs \
  libsqlite3-dev \
  file \
  libmagickcore-6.q16-2-extra=8:6.8.9.9-5+deb8u1 \
  imagemagick-common=8:6.8.9.9-5+deb8u1 \
  imagemagick=8:6.8.9.9-5+deb8u1 \
  imagemagick-6.q16=8:6.8.9.9-5+deb8u1 \
  libmagickcore-6.q16-2=8:6.8.9.9-5+deb8u1 \
  libmagickwand-6.q16-2=8:6.8.9.9-5+deb8u1 \
  --fix-missing \
  --no-install-recommends

ENV INSTALL_PATH /app
RUN mkdir -p $INSTALL_PATH

WORKDIR $INSTALL_PATH

COPY Gemfile Gemfile
COPY Gemfile.lock Gemfile.lock
RUN gem install bundler
RUN bundle install

COPY . .

ENV RAILS_ENV=production
ENV RAILS_SERVE_STATIC_FILES=true

RUN rake SECRET_KEY_BASE=pickasecuretoken assets:precompile

COPY entrypoint.sh /entrypoint.sh
ENTRYPOINT ["/entrypoint.sh"]

CMD ["rails", "s", "--binding=0.0.0.0"]