Start the main service with XDebug disabled

.env.dist

@@ -141,6 +141,14 @@ DTT_MINK_DRIVER_ARGS="['chrome', null, 'http://selenium:4444/wd/hub']"
 # production databases.
 DOCKER_RESTORE_PRODUCTION=no
 
+# Copy this variable in .env file and set the value to "True" in order to start
+# the Docker web service with XDebug disabled. Note that you can anytime enable
+# XDebug manually by issuing:
+# $ docker-compose exec web phpenmod xdebug
+# or disable it with:
+# $ docker-compose exec web phpdismod xdebug
+DISABLE_XDEBUG="False"
+
 # Debugging
 # TODO: The following vars were not tested. They were inherited from a previous
 # Docker setup. To investigate if we still need them.

docker-compose.yml

@@ -39,6 +39,7 @@ services:
       ASDA_URL:
       ASDA_USER:
       ASDA_PASSWORD:
+      DISABLE_XDEBUG:
     depends_on:
       - mysql
       - virtuoso