Add xdebug to 7.2

7.2/Dockerfile

@@ -1,7 +1,6 @@
 FROM php:7.2-rc-zts
 LABEL maintainer "Tony Blyler <me@tonyblyler.com>"
 
-# FIXME get xdebug working for PHP 7.2 (not officially supported yet)
 # pecl install xdebug
 RUN apt-get update && \
 	apt-get install -y \
@@ -17,9 +16,17 @@ RUN apt-get update && \
 		make install && \
 		cd - && \
 		rm -Rf /tmp/pthreads && \
+	# xdebug install since pecl doesn't like php 7.2 yet for xdebug
+	git clone --depth=1 https://github.com/xdebug/xdebug -b master /tmp/xdebug && \
+		cd /tmp/xdebug && \
+		phpize && \
+		./configure && \
+		make && \
+		make install && \
+		cd - && \
+		rm -Rf /tmp/xdebug && \
 	docker-php-ext-install pcntl sockets && \
-	docker-php-ext-enable pthreads
-	# docker-php-ext-enable xdebug
+	docker-php-ext-enable pthreads xdebug
 
 ENTRYPOINT ["docker-php-entrypoint"]
 CMD ["php", "-a"]