fix data-dir write error

Dockerfile

@@ -45,7 +45,10 @@ mkdir -p /tmp/caddy && \
 tar xvf /tmp/caddy.tar.gz -C /tmp/caddy && \
 cp -r /tmp/caddy /app/
 
-
+# Add health check
+HEALTHCHECK --interval=30s --timeout=10s --start-period=60s --retries=3 \
+  CMD curl -f http://localhost:7860/ || exit 1
+  
 # Start with sync
 ENTRYPOINT ["/start.sh"]