Remove apt-get upgrade instances (fluent#438)

This upgrades packages from the base layer in a lower layer, which bloats the layers.  The Docker Official Images instead update the base image, which in turn causes a rebuild that includes the updates packages.

Signed-off-by: Tianon Gravi <admwiggin@gmail.com>

Author: tianon

Dockerfile.template.erb

@@ -101,7 +101,6 @@ RUN apt-get update \
       make gcc g++ libc-dev \
       wget bzip2 gnupg dirmngr \
     " \
- && apt-get -V -y upgrade \
  && apt-get install -y --no-install-recommends $buildDeps \
 <% end %>
  && echo 'gem: --no-document' >> /etc/gemrc \

v1.16/arm64/debian/Dockerfile

@@ -18,7 +18,6 @@ RUN apt-get update \
       make gcc g++ libc-dev \
       wget bzip2 gnupg dirmngr \
     " \
- && apt-get -V -y upgrade \
  && apt-get install -y --no-install-recommends $buildDeps \
  && echo 'gem: --no-document' >> /etc/gemrc \
  && gem install oj -v 3.16.1 \

v1.16/armhf/debian/Dockerfile

@@ -27,7 +27,6 @@ RUN apt-get update \
       make gcc g++ libc-dev \
       wget bzip2 gnupg dirmngr \
     " \
- && apt-get -V -y upgrade \
  && apt-get install -y --no-install-recommends $buildDeps \
  && echo 'gem: --no-document' >> /etc/gemrc \
  && gem install oj -v 3.16.1 \

v1.16/debian/Dockerfile

@@ -16,7 +16,6 @@ RUN apt-get update \
       make gcc g++ libc-dev \
       wget bzip2 gnupg dirmngr \
     " \
- && apt-get -V -y upgrade \
  && apt-get install -y --no-install-recommends $buildDeps \
  && echo 'gem: --no-document' >> /etc/gemrc \
  && gem install oj -v 3.16.1 \