メモ書き
ひとまずCentOS7ベースで作成
FROM centos:7

# System update
RUN yum -y update

# Soft install
RUN yum install -y vim tar zlib-devel bzip2 bzip2-devel readline-devel sqlite sqlite-devel openssl-devel gcc libyaml-devel libffi-devel gdbm-devel ncurses-devel git make

# anyenv
RUN git clone https://github.com/riywo/anyenv /usr/local/anyenv
RUN echo -e "if [ -d /usr/local/anyenv ] ; then" >> /etc/profile.d/anyenv.sh
RUN echo -e "    export PATH=/usr/local/anyenv/bin/:\$PATH" >> /etc/profile.d/anyenv.sh
RUN echo -e "    eval \"\$(anyenv init -)\"" >> /etc/profile.d/anyenv.sh
RUN echo -e "    for D in \`ls /usr/local/anyenv/envs\`" >> /etc/profile.d/anyenv.sh
RUN echo -e "    do" >> /etc/profile.d/anyenv.sh
RUN echo -e "        export PATH=\"/usr/local/anyenv/envs/\$D/shims:\$PATH\"" >> /etc/profile.d/anyenv.sh
RUN echo -e "    done" >> /etc/profile.d/anyenv.sh
RUN echo -e "fi" >> /etc/profile.d/anyenv.sh
RUN echo -e "export ANYENV_ROOT=\"/usr/local/anyenv\"" >> /etc/profile.d/anyenv.sh
ENV PATH /usr/local/anyenv/bin:$PATH
ENV ANYENV_ROOT /usr/local/anyenv