diff --git a/Setup private docker registry on %60data-server%60.-.md b/Setup private docker registry on %60data-server%60.-.md
deleted file mode 100644
index b6fab42..0000000
--- a/Setup private docker registry on %60data-server%60.-.md	
+++ /dev/null
@@ -1,5 +0,0 @@
-Since `/etc/letsencrypt/live/focs.ji.sjtu.edu.cn` only contains symlinks,
-
-```
-docker run -d   --restart=always   --name registry   -v /etc/letsencrypt/archive/focs.ji.sjtu.edu.cn:/certs   -e REGISTRY_HTTP_ADDR=0.0.0.0:5000   -e REGISTRY_HTTP_TLS_CERTIFICATE=/certs/fullchain20.pem   -e REGISTRY_HTTP_TLS_KEY=/certs/privkey20.pem  -e REGISTRY_STORAGE_DELETE_ENABLED=true -v registry-data:/var/lib/registry -p 5000:5000   registry:2.8.3
-```