diff --git a/Run-acme.sh-in-docker.md b/Run-acme.sh-in-docker.md
index 66a7bdb..a7df745 100644
--- a/Run-acme.sh-in-docker.md
+++ b/Run-acme.sh-in-docker.md
@@ -1,3 +1,80 @@
 # acme.sh 💕 docker
 
-There are 2 ways to use **acme.sh** in docker.
\ No newline at end of file
+As one of the big docker fans, I understand that we hate to install anything on a docker host, even if it's copying a shell script. 
+
+So, Here "acme.sh in docker" comes.
+
+# 1. Say "Hello World"
+
+```sh
+docker run --rm neilpang/acme.sh
+```
+
+# 2. Use as an executable:
+
+```sh
+docker run --rm  -it  \
+  -v "$(pwd)/out":/acme.sh  \
+  --net=host \
+  neilpang/acme.sh  --issue -d example.com  --standalone
+```
+
+You can use **any commands** that **acme.sh** supports here, other examples:
+
+
+```sh
+#revoke a cert
+docker run --rm  -it  \
+  -v "$(pwd)/out":/acme.sh  \
+  --net=host \
+  neilpang/acme.sh  --revoke -d example.com
+```
+
+```sh
+#use dns mode
+docker run --rm  -it  \
+  -v "$(pwd)/out":/acme.sh  \
+  neilpang/acme.sh  --issue -d example.com --dns
+```
+
+```sh
+#run cron job
+docker run --rm  -it  \
+  -v "$(pwd)/out":/acme.sh  \
+  --net=host \
+  neilpang/acme.sh  --cron
+```
+
+Anyway, you can just invoke **neilpang/acme.sh** image as if it were a real shell script.
+
+
+3. Run acme.sh as a docker daemon.
+
+## 1. Starting acme.sh as a docker daemon, so that it can handle the renewal cronjob automatically.
+
+```sh
+docker run --rm  -itd  \
+  -v "$(pwd)/out":/acme.sh  \
+  --net=host \
+  --name=acme.sh \
+  neilpang/acme.sh 
+```
+
+## 2. Then you can just use `docker exec` to execute any acme.sh commands.
+
+```sh
+docker  exec  acme.sh --help
+```
+
+```sh
+docker  exec  acme.sh --issue -d example.com  --standalone
+```
+
+Yes, again, You can use **any commands** that **acme.sh** supports here.
+
+
+
+
+
+
+