Fixed Web-Server Build Error "libcurl3 has no installation candidate"

bin/webserver/Dockerfile

@@ -1,10 +1,18 @@
-FROM php:7.2-apache
+# Quickfix - Basebox for PHP7.2 Library now uses Debian "10" Buster, superceeding #libcurl3, stretch is most compatible at this time whilst devs workout backport.
+# https://github.com/docker-library/php/issues/865
 
-RUN apt-get -y update --fix-missing
-RUN apt-get upgrade -y
+FROM php:7.2-apache-stretch
+
+# Surpresses debconf complaints of trying to install apt packages interactively
+# https://github.com/moby/moby/issues/4032#issuecomment-192327844
+
+ARG DEBIAN_FRONTEND=noninteractive
+
+RUN apt-get -y update --fix-missing --no-install-recommends
+RUN apt-get -y upgrade
 
 # Install useful tools
-RUN apt-get -y install apt-utils nano wget dialog
+RUN apt-get -yq install apt-utils nano wget dialog
 
 # Install important libraries
 RUN apt-get -y install --fix-missing apt-utils build-essential git curl libcurl3 libcurl3-dev zip openssl