Dockerfile

FROM python:2.7-slim

RUN mkdir ~/repos

WORKDIR /app

ADD . /app

RUN pip install --trusted-host pypi.python.org -r requirements.txt

EXPOSE 43000

ENV NAME World

RUN apt-get -y update
RUN apt-get install -y --force-yes build-essential curl git
RUN apt-get install -y --force-yes zlib1g-dev libssl-dev libreadline-dev libyaml-dev libxml2-dev libxslt-dev
RUN apt-get install -y --force-yes nodejs
RUN apt-get clean

# Install rbenv
RUN git clone https://github.com/sstephenson/rbenv.git /usr/local/rbenv
RUN echo '# rbenv setup' > /etc/profile.d/rbenv.sh
RUN echo 'export RBENV_ROOT=/usr/local/rbenv' >> /etc/profile.d/rbenv.sh
RUN echo 'export PATH="$RBENV_ROOT/bin:$PATH"' >> /etc/profile.d/rbenv.sh
RUN echo 'eval "$(rbenv init -)"' >> /etc/profile.d/rbenv.sh
RUN chmod +x /etc/profile.d/rbenv.sh

# install ruby-build
RUN mkdir /usr/local/rbenv/plugins
RUN git clone https://github.com/sstephenson/ruby-build.git /usr/local/rbenv/plugins/ruby-build

ENV RBENV_ROOT /usr/local/rbenv
ENV PATH $RBENV_ROOT/bin:$RBENV_ROOT/shims:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin

RUN rbenv install 2.0.0-p247
RUN rbenv install 2.2.2
RUN rbenv install 2.5.0

CMD ["python", "app.py"]