Customizable db path in server

README.md

@@ -59,6 +59,9 @@ adapt its behavior:
 * `HOST=` to specify the host to listen to (defaults to `127.0.0.1` which
     means `localhost` only).
 * `PORT=` to specify the port to listen on (defaults to `8081`).
+* `DATABASE=` to specify a [database URL](http://docs.peewee-orm.com/en/latest/peewee/playhouse.html#db-url) to connect to (defaults to
+    `sqlite:///reports.db` which means a SQLite database named `reports.db` in
+    the current working directory).
 
 ### Serving
 

server/models.py

@@ -3,11 +3,14 @@
 """
 Models and database definition
 """
+import os
+
 import arrow
 import peewee
+from playhouse.db_url import connect
 from playhouse.shortcuts import model_to_dict
 
-db = peewee.SqliteDatabase('reports.db')
+db = connect(os.environ.get('DATABASE', 'sqlite:///reports.db'))
 
 
 class BaseModel(peewee.Model):