Support both ADDOK_SQLITE_DB_PATH and SQLITE_DB_PATH env vars

- ADDOK_SQLITE_DB_PATH is the recommended convention
- SQLITE_DB_PATH is kept for backward compatibility
- Priority: ADDOK_SQLITE_DB_PATH > SQLITE_DB_PATH > config.SQLITE_DB_PATH

Author: jdesboeufs

addok_sqlite_store/__init__.py

@@ -11,7 +11,10 @@ def __init__(self, *args, **kwargs):
         self.init()
 
     def init(self):
-        self.conn = sqlite3.connect(os.environ.get('SQLITE_DB_PATH') or config.SQLITE_DB_PATH)
+        db_path = (os.environ.get('ADDOK_SQLITE_DB_PATH') or 
+                   os.environ.get('SQLITE_DB_PATH') or 
+                   config.SQLITE_DB_PATH)
+        self.conn = sqlite3.connect(db_path)
         self.lock = Lock()
         with self.conn as conn:
             conn.execute('CREATE TABLE IF NOT EXISTS '