ARG RUBY_VERSION=<%= config %> ARG RUBY_IMAGE=ruby:${RUBY_VERSION}-alpine FROM $RUBY_IMAGE
RUN apk add –no-cache –update build-base linux-headers git
ENV APP_HOME /usr/src/app/ ENV BUNDLE_PATH /gems ENV GEM_PATH ${BUNDLE_PATH} ENV GEM_HOME ${BUNDLE_PATH}
RUN mkdir ${BUNDLE_PATH}
WORKDIR ${APP_HOME} COPY . ${APP_HOME} RUN bundle install