sample multi stage build

multi_stage_build.dockerfile

FROM centos:latest as builder
MAINTAINER Horimatsu Takuya

WORKDIR /root
RUN yum install -y git ruby gcc make httpd-devel openssl-devel bison
RUN git clone https://github.com/matsumotory/mod_mruby.git

WORKDIR /root/mod_mruby
RUN chmod +x build.sh
RUN ./build.sh

# COPY ./src/.libs/mod_mruby.so .



FROM centos:latest

RUN yum install -y httpd less perl postfix httpd-devel
RUN echo 'LoadModule cgi_module libexec/apache2/mod_cgi.so' >> /etc/httpd/conf/httpd.conf
RUN echo 'LoadModule actions_module libexec/apache2/mod_actions.so' >> /etc/httpd/conf/httpd.conf

RUN sed -ie 's/AllowOverride None/AllowOverride All/'  /etc/httpd/conf/httpd.conf
RUN sed -ie 's/Options Indexes FollowSymLinks/Options +ExecCGI/' /etc/httpd/conf/httpd.conf

RUN mkdir /var/lib/mruby

COPY vhosts.conf /etc/httpd/conf.d/
COPY --from=builder /root/mod_mruby/src/.libs/mod_mruby.so /root
COPY http_filter.rb /var/lib/mruby

RUN /usr/bin/apxs -i -a -n 'mruby' /root/mod_mruby.so