dockerfile: base: ubuntu + nginx, rbenv and ruby 2.2.1

gistfile1.txt

# Ubuntu as the base image
FROM ubuntu:trusty

# Install core tools
RUN apt-get -y update
RUN apt-get -y install git-core zlib1g-dev build-essential libssl-dev libreadline-dev libyaml-dev libxml2-dev libxslt1-dev libcurl4-openssl-dev python-software-properties libffi-dev

# Install nginx
RUN apt-get -y install curl nginx

# 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

# Set rbenv path
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

# Install ruby
RUN /bin/bash -c 'rbenv install 2.2.1'
RUN /bin/bash -c 'rbenv global 2.2.1'

References:

• Nginx: https://www.digitalocean.com/community/tutorials/how-to-install-nginx-on-ubuntu-14-04-lts
• Rbenv: https://gist.github.com/deepak/5925003