Introduce a lightweight service for hosting on Heroku.

Pipfile

@@ -0,0 +1,19 @@
+[[source]]
+
+url = "https://pypi.python.org/simple"
+verify_ssl = true
+
+
+[packages]
+
+python-dateutil = "*"
+django = "*"
+django-heroku = "*"
+Flask = "*"
+gunicorn = "*"
+pytest = "*"
+
+
+[requires]
+
+python_version = "3"

Procfile

@@ -0,0 +1 @@
+web: gunicorn --pythonpath service service:app --log-file=-

service/service.py

@@ -0,0 +1,44 @@
+#!/usr/bin/env python3
+#
+# Copyright (C) 2015-2019 InSeven Limited.
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License
+# as published by the Free Software Foundation; either version 2
+# of the License, or (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+
+import logging
+import os
+
+from flask import Flask, escape, request, jsonify, send_from_directory, g, make_response, redirect
+
+
+ROOT_DIRECTORY = os.path.dirname(os.path.abspath(__file__))
+
+logging.basicConfig(level=logging.INFO, format="[%(asctime)s] [%(process)d] [%(levelname)s] %(message)s", datefmt='%Y-%m-%d %H:%M:%S %z')
+
+
+app = Flask(__name__)
+
+
+@app.route('/')
+def index():
+    return send_from_directory(ROOT_DIRECTORY, 'index.html')
+
+
+@app.route('/<path:path>')
+def everything_else(path):
+    return send_from_directory(ROOT_DIRECTORY, path)
+
+
+if __name__ == '__main__':
+    app.run(host='0.0.0.0')