fix: remove DNS config and add network retry options

Dockerfile

@@ -3,9 +3,6 @@
 
 FROM python:3.12
 
-RUN echo "nameserver 8.8.8.8" >> /etc/resolv.conf && \
-    echo "nameserver 8.8.4.4" >> /etc/resolv.conf
-
 RUN apt-get update && apt-get install -y ffmpeg && rm -rf /var/lib/apt/lists/*
 
 RUN useradd -m -u 1000 user

app.py

@@ -51,6 +51,9 @@ def download_youtube(url, task_id):
             "no_warnings": True,
             "extract_flat": "in_playlist",
             "max_downloads": 50,
+            "socket_timeout": 30,
+            "retries": 10,
+            "fragment_retries": 10,
         }
 
         update_status("analyzing")