Update fluentd base image for docker. (#1703)

Updated base image from: v1.3.2-debian to v1.9.2-debian-1.0.
Changed ruby from 2.3.0 to 2.6.0.

fluentd/fluent-plugin-grafana-loki/Dockerfile

@@ -1,10 +1,10 @@
-FROM fluent/fluentd:v1.3.2-debian
+FROM fluent/fluentd:v1.9.2-debian-1.0
 
 USER root
 WORKDIR /home/fluent
-ENV PATH /fluentd/vendor/bundle/ruby/2.3.0/bin:$PATH
-ENV GEM_PATH /fluentd/vendor/bundle/ruby/2.3.0
-ENV GEM_HOME /fluentd/vendor/bundle/ruby/2.3.0
+ENV PATH /fluentd/vendor/bundle/ruby/2.6.0/bin:$PATH
+ENV GEM_PATH /fluentd/vendor/bundle/ruby/2.6.0
+ENV GEM_HOME /fluentd/vendor/bundle/ruby/2.6.0
 # skip runtime bundler installation
 ENV FLUENTD_DISABLE_BUNDLER_INJECTION 1
 
@@ -12,7 +12,7 @@ COPY docker/Gemfile* /fluentd/
 RUN buildDeps="sudo make gcc g++ libc-dev ruby-dev" \
        && apt-get update \
        && apt-get install -y --no-install-recommends \
-       $buildDeps libsystemd0 net-tools libjemalloc1 \
+       $buildDeps libsystemd0 net-tools libjemalloc2 \
        && gem install bundler --version 1.16.2 \
        && bundle config silence_root_warning true \
        && bundle install --gemfile=/fluentd/Gemfile --path=/fluentd/vendor/bundle \
@@ -22,7 +22,7 @@ RUN buildDeps="sudo make gcc g++ libc-dev ruby-dev" \
        -o APT::AutoRemove::RecommendsImportant=false \
        $buildDeps \
        && rm -rf /var/lib/apt/lists/* \
-       /home/fluent/.gem/ruby/2.3.0/cache/*.gem \
+       /home/fluent/.gem/ruby/2.6.0/cache/*.gem \
        /tmp/* /var/tmp/* /usr/lib/ruby/gems/*/cache/*.gem
 
 COPY docker/entrypoint.sh /fluentd/entrypoint.sh
@@ -35,7 +35,7 @@ ENV FLUENTD_OPT=""
 ENV LOKI_URL "https://logs-us-west1.grafana.net"
 
 # See https://packages.debian.org/stretch/amd64/libjemalloc1/filelist
-ENV LD_PRELOAD="/usr/lib/x86_64-linux-gnu/libjemalloc.so.1"
+ENV LD_PRELOAD="/usr/lib/x86_64-linux-gnu/libjemalloc.so.2"
 
 # Overwrite ENTRYPOINT to run fluentd as root for /var/log / /var/lib
-ENTRYPOINT ["/fluentd/entrypoint.sh"]
+ENTRYPOINT ["/fluentd/entrypoint.sh"]

fluentd/fluent-plugin-grafana-loki/docker/Gemfile

@@ -6,4 +6,4 @@ gem 'fluent-plugin-kubernetes_metadata_filter', '~> 2.1.6'
 gem 'fluent-plugin-multi-format-parser', '~>1.0.0'
 gem 'fluent-plugin-prometheus', '~>1.4.0'
 gem 'fluent-plugin-systemd', '~> 1.0.1'
-gem 'fluentd', '1.6.2'
+gem 'fluentd', '1.9.0'