git subrepo pull (merge) mailcow/src/mailcow-dockerized

Among other things, this updates Dovecot to 2.3.13, which is a
critical security update.

subrepo: subdir:   "mailcow/src/mailcow-dockerized"
  merged:   "376574d9"
upstream: origin:   "https://github.com/mailcow/mailcow-dockerized.git"
  branch:   "master"
  commit:   "6f14955b"
git-subrepo: version:  "0.4.3"
  origin:   "???"
  commit:   "???"
Change-Id: Idf4859ddaaebf6997afbb0cebffc8bf3f5b902a0
diff --git a/mailcow/src/mailcow-dockerized/data/web/inc/lib/vendor/matthiasmullie/minify/Dockerfile b/mailcow/src/mailcow-dockerized/data/web/inc/lib/vendor/matthiasmullie/minify/Dockerfile
index d17f9d7..fc36a81 100644
--- a/mailcow/src/mailcow-dockerized/data/web/inc/lib/vendor/matthiasmullie/minify/Dockerfile
+++ b/mailcow/src/mailcow-dockerized/data/web/inc/lib/vendor/matthiasmullie/minify/Dockerfile
@@ -6,7 +6,7 @@
 
 RUN apt-get update
 RUN apt-get install -y zip unzip zlib1g-dev
-RUN docker-php-ext-install zip
+RUN if [[ `php-config --vernum` -ge 73000 ]]; then docker-php-ext-install zip; fi
 RUN docker-php-ext-install pcntl
 RUN curl -sS https://getcomposer.org/installer | php
 RUN mv composer.phar /usr/local/bin/composer