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Last active September 9, 2015 15:17
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Rails development environment with Docker, Dockerfile
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Dockerfile
FROM ruby:2.2.3
RUN \
apt-get update -qq && \
apt-get install -y build-essential
RUN mkdir app
WORKDIR app
COPY Gemfile ./
RUN bundle install
COPY . ./
@mattmenefee
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You might also want to add the follow after line 4 to clean up after the package installations:

  # cleanup after installations
  apt-get autoremove -y && \
  apt-get clean all && \
  rm -rf /var/lib/apt/lists/* /tmp/* /var/tmp/*

@mattmenefee
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You should also add the Gemfile.lock before the rest of the repo

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