fix

requirements.txt

@@ -3,3 +3,4 @@ chardet==5.2.0
 humanize==4.9.0
 mmh3==4.1.0
 flask==3.0.2
+python-magic==0.4.27

server.py

@@ -1,4 +1,5 @@
 import json
+import os
 import sqlite3
 from datetime import datetime
 from pathlib import Path
@@ -8,9 +9,12 @@ from flask import Flask, render_template, send_from_directory
 
 app = Flask(__name__)
 
+if not os.environ.get('SQLITE3_DB'):
+    raise Exception('SQLITE3_DB not set.')
+
 
 def get_db_connection():
-    conn = sqlite3.connect('emails.db')
+    conn = sqlite3.connect(os.environ.get('SQLITE3_DB'))
     conn.row_factory = sqlite3.Row
     return conn