Allow overriding XDEBUG_MODE through env var and set output dir

Author: derickr

docker-compose.yaml

@@ -4,6 +4,8 @@ services:
     container_name: xdebug-php
     extra_hosts:
       - "host.docker.internal:host-gateway"
+    environment:
+      XDEBUG_MODE: "${XDEBUG_MODE}"
     build:
       context: .
       dockerfile: Dockerfile
@@ -27,3 +29,6 @@ services:
       - type: "bind"
         source: "${PWD}/data"
         target: "/var/www/data"
+      - type: "bind"
+        source: "/tmp/docker-xdebug"
+        target: "/tmp/docker-xdebug"

docker/90-xdebug.ini

@@ -3,3 +3,4 @@ xdebug.mode=develop,debug
 xdebug.start_with_request=yes
 xdebug.discover_client_host=0
 xdebug.client_host=host.docker.internal
+xdebug.output_dir=/tmp/docker-xdebug