diff --git a/Dockerfile b/Dockerfile
index 5254bd11..8f363852 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -50,9 +50,10 @@ RUN for verb in help \
 
 RUN printf "%b" '#!'"/usr/bin/env sh\n \
 if [ \"\$1\" = \"daemon\" ];  then \n \
- crond -f\n \
+ trap \"echo stop && killall crond && exit 0\" SIGTERM SIGINT \n \
+ crond && while true; do sleep 1; done;\n \
 else \n \
- /root/.acme.sh/acme.sh --config-home /acme.sh \"\$@\"\n \
+ exec -- \"\$@\"\n \
 fi" >/entry.sh && chmod +x /entry.sh
 
 VOLUME /acme.sh
diff --git a/README.md b/README.md
index 13188982..5b6b03ae 100644
--- a/README.md
+++ b/README.md
@@ -296,6 +296,9 @@ acme.sh --renew -d example.com
 
 Ok, it's finished.
 
+**Take care, this is dns manual mode, it can not be renewed automatically. you will have to add a new txt record to your domain by your hand when you renew your cert.**
+
+**Please use dns api mode instead.**
 
 # 9. Automatic DNS API integration