Using instance name for local database.

src/knex.js

@@ -1,9 +1,11 @@
 const knex = require('knex');
 
+const instance = process.env.NODE_APP_INSTANCE || 'main';
+
 module.exports = knex({
 	client: 'better-sqlite3', // or 'better-sqlite3'
 	useNullAsDefault: true,
 	connection: {
-		filename: './clive.sqlite',
+		filename: `./${instance}.sqlite`,
 	},
 });