nginx samples sites for multiple projects

- add `project-1.conf` and `project-1.conf` to match the docs.
- keep default to work with both multiple and single projects.
- delete the .gitignore.
- update docker-compose and example-env file to match the new settings
- update the docs
- delete `laravel-https.conf` to replace it with documentation instead

docker-compose.yml

@@ -7,7 +7,7 @@ services:
     applications:
         image: tianon/true
         volumes:
-          - ${APPLICATION_1}:/var/www
+          - ${APPLICATION}:/var/www
 
 ### Workspace Utilities Container ###########################