Add PHP version checkers on all php-related dockerfiles

php-worker/Dockerfile-71

@@ -56,6 +56,13 @@ ENTRYPOINT ["/usr/bin/supervisord", "-n", "-c",  "/etc/supervisord.conf"]
 #
     # -- Your awesome modifications go here -- #
 
+#
+#--------------------------------------------------------------------------
+# Check PHP version
+#--------------------------------------------------------------------------
+#
+
+RUN php -v | head -n 1 | grep -q "PHP 7.1."
 
 #
 #--------------------------------------------------------------------------