docker-compose: add .docker/compose/custom.yml for customize config docker

Author: jgauthi

.docker/compose/docker.env

@@ -2,6 +2,8 @@
 COMPOSE_PATH_SEPARATOR=;
 COMPOSE_PROJECT_NAME=sfdemo
 COMPOSE_FILE=.docker/compose/base.yml;.docker/compose/base-dev.yml;.docker/compose/phpmyadmin.yml;.docker/compose/maildev.yml
+# [COMPOSE_FILE] You can add ;.docker/compose/custom.yml for customize your local install
+
 # VOLUME_USER_ID=1001 # You can set your Linux UserID (command: id -u)
 # COMPOSER_HOME=/home/$user/.cache/composer/  # You can set your composer folder, change $user by your username
 

.gitignore

@@ -1,6 +1,6 @@
 project/
 !project/.gitkeep
 .env
-!.docker/compose/.env.dist
+.docker/compose/custom.yml
 docker-compose.override.yml
 dump_*.sql