Enhance API and configuration for Telegram miniapp

- Added support for CORS origins and a new environment variable for miniapp access control.
- Implemented date validation for API requests to ensure correct date formats.
- Updated FastAPI app to allow access without Telegram initData for local development.
- Enhanced error handling and logging for better debugging.
- Added tests for API functionality and Telegram initData validation.
- Updated README with new environment variable details and testing instructions.
- Modified Docker and Git ignore files to include additional directories and files.

alembic/env.py

@@ -3,22 +3,20 @@ import os
 import sys
 from logging.config import fileConfig
 
-from dotenv import load_dotenv
 from sqlalchemy import create_engine
 from alembic import context
 
-load_dotenv()
-
 sys.path.insert(0, os.path.dirname(os.path.dirname(os.path.abspath(__file__))))
 
+import config
 from db.models import Base
 
-config = context.config
-if config.config_file_name is not None:
-    fileConfig(config.config_file_name)
+config_alembic = context.config
+if config_alembic.config_file_name is not None:
+    fileConfig(config_alembic.config_file_name)
 
-database_url = os.getenv("DATABASE_URL", "sqlite:///data/duty_teller.db")
-config.set_main_option("sqlalchemy.url", database_url)
+database_url = config.DATABASE_URL
+config_alembic.set_main_option("sqlalchemy.url", database_url)
 
 target_metadata = Base.metadata