diff --git a/README.md b/README.md
index b19ac07..f90e6dc 100644
--- a/README.md
+++ b/README.md
@@ -29,3 +29,10 @@ pip freeze > requirements.txt
 
 **Do not forget** to install the latest dependencies before adding new dependencies and rewriting
 the `requirements.txt` file. Otherwise old dependencies could be lost.
+
+## Running the bot
+
+```shell
+export TELEGRAM_TOKEN=xxx
+python bot.py
+```
diff --git a/bot.py b/bot.py
new file mode 100644
index 0000000..b3de037
--- /dev/null
+++ b/bot.py
@@ -0,0 +1,13 @@
+import logging
+import os
+from telegram.command_processor import CommandProcessor
+
+from dotenv import load_dotenv
+
+load_dotenv()
+
+token = os.getenv('TELEGRAM_TOKEN')
+
+bot = CommandProcessor(token)
+logging.info("Starting Telegram bot")
+bot.run()
diff --git a/requirements.txt b/requirements.txt
index 8b2e6e8..2bbfd18 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -2,5 +2,6 @@ certifi==2021.10.8
 charset-normalizer==2.0.12
 idna==3.3
 pyTelegramBotAPI==4.5.0
+python-dotenv==0.20.0
 requests==2.27.1
 urllib3==1.26.9
diff --git a/telegram/command_processor.py b/telegram/command_processor.py
index 6129ded..7856ac6 100644
--- a/telegram/command_processor.py
+++ b/telegram/command_processor.py
@@ -1,13 +1,14 @@
 import telebot
 from telebot.types import Message
 
-
 class CommandProcessor:
     """Processes user input and dispatches the data to other services."""
 
     bot: telebot.TeleBot
 
     def __init__(self, token: str):
+        if token is None or len(token) == 0:
+            raise ValueError("Token should not be empty")
         self.bot = telebot.TeleBot(token)
 
     def run(self):