add script to install xdebug from source

Author: Giuseppe Morelli

local/config/php/7.2/mods-available/xdebug-custom.ini

@@ -0,0 +1,16 @@
+zend_extension=/opt/xdebug/modules/xdebug.so
+
+xdebug.remote_enable= on
+xdebug.force_display_errors=1
+xdebug.force_error_reporting=1
+xdebug.cli_color=1
+xdebug.var_display_max_children=-1
+xdebug.var_display_max_data=1024
+xdebug.var_display_max_depth=50
+xdebug.max_nesting_level=1000
+xdebug.idekey=DOCKERGM
+xdebug.remote_connect_back = on
+; xdebug.remote_autostart=1
+; xdebug.remote_host=<host with IDE>
+; xdebug.remote_host=172.16.250.1
+

local/env.dist

@@ -136,6 +136,7 @@ REDIS_COMMANDER_HOSTS=db0:redis-server:6379:0,db1:redis-server:6379:1
 ################################################################################
 
 # Possibile values: "off,develop,coverage,debug,gcstats,profile,trace"
+# see https://xdebug.org/docs/all_settings#mode
 XDEBUG_MODE=off
 XDEBUG_SESSION=DOCKERGM
 XDEBUG_CONFIG=client_port=9000

local/provision/bin/sudo_xdebug_from_source.sh

@@ -0,0 +1,19 @@
+#!/usr/bin/env bash
+
+set -e
+
+# downgrade to xdebug 2.9
+apt-get remove --purge php-xdebug -y
+cd /opt/
+git clone https://github.com/xdebug/xdebug.git xdebug
+cd xdebug
+git checkout 2.9.8
+phpize
+./configure --enable-xdebug
+make
+make install
+
+# replace xdebug 3 with xdebug 2 config
+cp /var/www/html/docker/local/config/php/7.3/mods-available/xdebug-custom.ini /etc/php/7.3/mods-available/xdebug-custom.ini
+rm /etc/php/7.3/apache2/conf.d/90-xdebug-3.ini
+rm /etc/php/7.3/cli/conf.d/90-xdebug-3.ini