corrected env vars for being dynamic

server/py/fastapi_server/main.py

@@ -16,11 +16,14 @@ import db_setup as db  # Import the entire db_setup module
 from user_mgmt import *
 from media_mgmt import *
 
+pathRoot = os.environ.get("ROOT_PATH","/")
+
 app = FastAPI(
     title="YT2MP3 API",
     description="Simple API to download YouTube videos as MP3.",
     version="1.0.0",
     license_info="MIT",
+    root_path=pathRoot,
     lifespan=db.lifespan
 )