Dockerfile

gistfile1.txt

FROM ubuntu:14.04
FROM ruby:2.0.0

MAINTAINER James Denman <james.denman@levvel.io>

EXPOSE 3000
ENV RUBY_MAJOR 2.2
ENV RUBY_VERSION 2.2.3
ENV RUBY_DOWNLOAD_SHA256 df795f2f99860745a416092a4004b016ccf77e8b82dec956b120f18bdc71edce
ENV RUBYGEMS_VERSION 2.5.0

# skip installing gem documentation
RUN echo 'install: --no-document\nupdate: --no-document' >> "$HOME/.gemrc"

# some of ruby's build scripts are written in ruby
# we purge this later to make sure our final image uses what we just built
RUN apt-get update \
  && apt-get install -y bison libgdbm-dev ruby \
  && rm -rf /var/lib/apt/lists/* \
  && mkdir -p /usr/src/ruby \
  && curl -fSL -o ruby.tar.gz "http://cache.ruby-lang.org/pub/ruby/$RUBY_MAJOR/ruby-$RUBY_VERSION.tar.gz" \
  && echo "$RUBY_DOWNLOAD_SHA256 *ruby.tar.gz" | sha256sum -c - \
  && tar -xzf ruby.tar.gz -C /usr/src/ruby --strip-components=1 \
  && rm ruby.tar.gz \
  && cd /usr/src/ruby \
  && autoconf \
  && ./configure --disable-install-doc \
  && make -j"$(nproc)" \
  && make install \
  && apt-get purge -y --auto-remove bison libgdbm-dev ruby \
  && gem update --system $RUBYGEMS_VERSION \
  && rm -r /usr/src/ruby

# install things globally, for great justice
ENV GEM_HOME /usr/local/bundle
ENV PATH $GEM_HOME/bin:$PATH

ENV BUNDLER_VERSION 1.10.6

RUN gem install bundler --version "$BUNDLER_VERSION" \
  && bundle config --global path "$GEM_HOME" \
  && bundle config --global bin "$GEM_HOME/bin"

# don't create ".bundle" in all our apps
ENV BUNDLE_APP_CONFIG $GEM_HOME


RUN mkdir -p /usr/src/app
COPY . /usr/src/app
WORKDIR /usr/src/app
RUN gem install bundler && bundle install --jobs 20 --retry 5
CMD ["bin/bundle", "exec", "unicorn", "-p", "3000"]