FROM ubuntu:20.04
RUN apt-get update
# basics 
RUN apt-get install -y libssl-dev curl libmysqlclient-dev imagemagick nodejs mysql-server redis-server tzdata
RUN ln -fs /usr/share/zoneinfo/Asia/Shanghai /etc/localtime
# confirm openssl version
RUN openssl version
RUN which openssl
# install RVM, Ruby, and Bundler
RUN \curl -L https://get.rvm.io | bash -s stable
RUN /bin/bash -l -c "rvm requirements"
# replace ruby mirror url, accelerate install ruby
RUN sed -i 's/rvm_remote_server_url2/#rvm_remote_server_url2/g' /usr/local/rvm/config/db
RUN sed -i 's/cache.ruby-lang.org/cache.ruby-china.com/g' /usr/local/rvm/config/db
# install ruby
RUN /bin/bash -l -c "rvm install 2.4.5"
# confirm ruby version
RUN /bin/bash -l -c "rvm list"
RUN /bin/bash -l -c "ruby -v"