Dockerfile.alpine3.8

FROM alpine:3.8

ARG RUBY_VERSION=2.4.4
ARG ASSET_VERSION=local_build

RUN apk --no-cache add build-base gmp-dev zlib-dev gdbm-dev db-dev readline-dev libffi-dev coreutils yaml-dev linux-headers autoconf
RUN apk --no-cache add openssh-client openssl-dev libc6-compat
RUN apk --no-cache add wget git sudo bash bash-doc bash-completion


RUN wget -O ruby-install-0.7.0.tar.gz https://github.com/postmodern/ruby-install/archive/v0.7.0.tar.gz 
RUN tar -xzvf ruby-install-0.7.0.tar.gz 
RUN cd ruby-install-0.7.0/ && ac_cv_func_isnan=yes ac_cv_func_isinf=yes make install 
RUN ac_cv_func_isnan=yes ac_cv_func_isinf=yes ruby-install ruby ${RUBY_VERSION} -- --enable-load-relative --disable-install-doc 
RUN PATH=$PATH:/opt/rubies/ruby-${RUBY_VERSION}/bin/ && gem install --no-ri --no-rdoc ffi
RUN PATH=$PATH:/opt/rubies/ruby-${RUBY_VERSION}/bin/ && gem install --no-ri --no-rdoc unf_ext
RUN PATH=$PATH:/opt/rubies/ruby-${RUBY_VERSION}/bin/ && gem install --no-ri --no-rdoc sys-filesystem

RUN LIBS=$(find /opt/rubies/ruby-${RUBY_VERSION} -type f -exec ldd {} 2>/dev/null \;|  grep "=>" | grep -v "vdso.so.1" | awk '{print $3}'| sort -u ) && \
  for f in $LIBS; do if [ -e $f ]; then echo "Copying Library: $f" && cp $f /opt/rubies/ruby-${RUBY_VERSION}/lib/; fi; done 

RUN LIBS=$(apk info -L libc6-compat 2>/dev/null |  grep "^lib/lib" | sort -u ) && \
  for f in $LIBS; do if [ -e $f ]; then echo "Copying Library: /$f" && cp /$f /opt/rubies/ruby-${RUBY_VERSION}/lib/; fi; done

RUN mkdir /assets/ && \
  export SENSU_ASSET="/assets/sensu-ruby-runtime_${ASSET_VERSION}_ruby-${RUBY_VERSION}_alpine3.8_$(uname -s | tr '[:upper:]' '[:lower:]')_amd64.tar.gz" && \
  tar -czf $SENSU_ASSET -C /opt/rubies/ruby-${RUBY_VERSION}/ .

ENV PATH=$PATH:/opt/rubies/ruby-${RUBY_VERSION}/bin