Dockerfile.erb

<% fluentd_ver = version.split("-").first %>
<% target = (dockerfile.split("/").last.split("-").first) %>
# AUTOMATICALLY GENERATED
# DO NOT EDIT THIS FILE DIRECTLY, USE /templates/Dockerfile.erb

FROM fluent/fluentd:<%= fluentd_ver %>

MAINTAINER Eduardo Silva <eduardo@treasure-data.com>
USER root
WORKDIR /home/fluent
ENV PATH /home/fluent/.gem/ruby/2.3.0/bin:$PATH

RUN set -ex \
    && apk add --no-cache --virtual .build-deps \
        build-base \
        ruby-dev \
    && echo 'gem: --no-document' >> /etc/gemrc \
    && gem install fluent-plugin-secure-forward \
    && gem install fluent-plugin-record-reformer \
<% case target
    when "elasticsearch"%>
    && gem install fluent-plugin-elasticsearch \
<%  when "logentries"%>
    # && gem install fluent-plugin-logentries \
<%  when "loggly"%>
    && gem install fluent-plugin-loggly \
<%  when "cloudwatch"%>
    && gem install fluent-plugin-cloudwatch-logs -v 0.3.3 \
<% end%>
    && gem install fluent-plugin-kubernetes_metadata_filter \
    && apk del .build-deps \
    && rm -rf /tmp/* /var/tmp/* /usr/lib/ruby/gems/*/cache/*.gem

# Copy configuration files
COPY ./conf/fluent.conf /fluentd/etc/
COPY ./conf/kubernetes.conf /fluentd/etc/

# Copy plugins
COPY plugins /fluentd/plugins/

# Environment variables
ENV FLUENTD_OPT=""
ENV FLUENTD_CONF="fluent.conf"

# jemalloc is memory optimization only available for td-agent
# td-agent is provided and QA'ed by treasuredata as rpm/deb/.. package
# -> td-agent (stable) vs fluentd (edge)
#ENV LD_PRELOAD="/usr/lib/libjemalloc.so.2"

# Run Fluentd
CMD exec fluentd -c /fluentd/etc/$FLUENTD_CONF -p /fluentd/plugins $FLUENTD_OPT