re-added mysql client

Author: schmunk42

php/Dockerfile-fpm

@@ -15,6 +15,7 @@ RUN apt-get update && \
  git \
  nano \
  npm \
+ default-mysql-client \
  --no-install-recommends && \
  apt-get clean && \
  rm -rf /var/lib/apt/lists/* /tmp/* /var/tmp/*