Dockerfile.erb

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

<% if is_alpine %>
FROM fluent/fluentd:<%= fluentd_ver %>
<% else %>
FROM fluent/fluentd:<%= fluentd_ver %>-debian
<% end %>

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

<% if is_alpine %>
RUN set -ex \
    && apk update && apk upgrade \
    && apk add --no-cache --virtual .build-deps \
        build-base \
        ruby-dev \
        libffi-dev \
<% else %>
RUN buildDeps="sudo make gcc g++ libc-dev ruby-dev libffi-dev" \
     && apt-get update \
     && apt-get upgrade -y \
     && apt-get install \
     -y --no-install-recommends \
     $buildDeps \
<% end %>
    && echo 'gem: --no-document' >> /etc/gemrc \
    && (gem sources -a $CUSTOM_GEM_SERVER 2> /dev/null || true ) \
    && gem install fluent-plugin-secure-forward \
    && gem install fluent-plugin-record-reformer \
    && gem install fluent-plugin-prometheus -v 0.4.0 \
<% 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 aws-sdk-core -v 2.10.50 \
    && gem install fluent-plugin-cloudwatch-logs -v 0.4.5 \
    && gem install fluent-plugin-detect-exceptions -v 0.0.9 \
<% when "stackdriver" %>
    && gem install fluent-plugin-google-cloud \
<% when "s3" %>
    && gem install fluent-plugin-s3 -v "~> 0.8" \
<% when "papertrail" %>
    && gem install fluent-plugin-papertrail -v 0.1.1 \
<% end%>
    && gem install fluent-plugin-kubernetes_metadata_filter -v 1.0.1 \
<% if !is_alpine %>
    && gem install ffi \
    && gem install fluent-plugin-systemd -v 0.0.8 \
<% end %>
<% if is_alpine %>
    && apk del .build-deps \
<% else %>
    && SUDO_FORCE_REMOVE=yes \
    apt-get purge -y --auto-remove \
                  -o APT::AutoRemove::RecommendsImportant=false \
                  $buildDeps \
 && rm -rf /var/lib/apt/lists/* \
<% end %>
    && gem sources --clear-all \
    && rm -rf /tmp/* /var/tmp/* /usr/lib/ruby/gems/*/cache/*.gem

# Copy configuration files
COPY ./conf/fluent.conf /fluentd/etc/
<% if !is_alpine %>
COPY ./conf/systemd.conf /fluentd/etc/
<% end %>
COPY ./conf/kubernetes.conf /fluentd/etc/
COPY ./conf/prometheus.conf /fluentd/etc/

# Copy plugins
COPY plugins /fluentd/plugins/
COPY entrypoint.sh /fluentd/entrypoint.sh

# 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 ["/fluentd/entrypoint.sh"]