diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index 340e00d1..460aa1d4 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -23,6 +23,8 @@ git submodule update --init --recursive
 
 ### Start Develop Environment
 
+ _Note_: in vscode, you can use Reopen in dev container to start the develop environment.
+
 ```
 # in e2e folder, run:
 SSHPIPERD_DEBUG=1 docker-compose up --force-recreate --build -d
diff --git a/README.md b/README.md
index 2b48b96b..eee92d83 100644
--- a/README.md
+++ b/README.md
@@ -58,7 +58,7 @@ docker run -d -e USER_NAME=user -e USER_PASSWORD=pass -e PASSWORD_ACCESS=true -p
 ### start `sshpiperd` with `fixed` plugin targeting the dummy sshd server
 
 ```
-sudo ./out/sshpiperd ./out/fixed --target 127.0.0.1:5522
+./out/sshpiperd -i /tmp/sshpiperkey --server-key-generate-mode notexist --log-level=trace ./out/fixed --target 127.0.0.1:5522
 ```
 
 ### test ssh connection (password: `pass`)
@@ -72,7 +72,7 @@ ssh 127.0.0.1 -l user -p 2222
 Here illustrates the example of `addional challenge` before the `fixed` plugin.
 
 ```
-sudo ./out/sshpiperd --log-level=trace ./out/simplemath -- ./out/fixed --target 127.0.0.1:5522
+./out/sshpiperd -i /tmp/sshpiperkey --server-key-generate-mode notexist --log-level=trace ./out/simplemath -- ./out/fixed --target 127.0.0.1:5522
 ```
 
 ## Plugins
@@ -150,7 +150,11 @@ How this work
                       |                        |     |                |
                       |                        |     |                |
                       +------------------------+     +----------------+
-```                      
+```
+
+## Ports to other platforms
+
+ * [sshpiper on OpenWrt](https://github.com/ihidchaos/sshpiper-openwrt) by [@ihidchaos](https://github.com/ihidchaos)
 
 ## Migrating from `v0`