diff --git a/README.md b/README.md
index e465838..ea5b281 100644
--- a/README.md
+++ b/README.md
@@ -4,51 +4,23 @@
 
 The documentations are rendered with  [Jekyll](http://jekyllrb.com) and hosted at http://ray-di.github.io/.
 
-### Install jekyll via docker
+### Start Server with Docker
 
 ```
-docker pull jekyll/jekyll:pages
+./bin/serve_docker.sh
 ```
 
-### Start local testing server
+### Start Server in local Ruby environment
 
+* Requires Ruby 3.2.3 (Notice: It's [not or later](https://stackoverflow.com/questions/77851863/bundle-exec-jekyll-serve-not-working-locally))
+
+#### Install
 ```
-git clone git@github.com:ray-di/ray-di.github.io.git
-cd ray-di.github.io
-./bin/serve.sh
+gem install jekyll bundler
+bundle install
 ```
 
-### Troubleshooting
-
-If the following error occurs, you can substitute `docker compose up`.
-
+#### Run
 ```
-ruby 3.1.1p18 (2022-02-18 revision 53f5fc4236) [x86_64-linux-musl]
-Configuration file: /srv/jekyll/_config.yml
-            Source: /srv/jekyll
-       Destination: /srv/jekyll/_site
- Incremental build: disabled. Enable with --incremental
-      Generating... 
-                    done in 3.192 seconds.
- Auto-regeneration: enabled for '/srv/jekyll'
-<internal:/usr/local/lib/ruby/site_ruby/3.1.0/rubygems/core_ext/kernel_require.rb>:85:in `require': cannot load such file -- webrick (LoadError)
-	from <internal:/usr/local/lib/ruby/site_ruby/3.1.0/rubygems/core_ext/kernel_require.rb>:85:in `require'
-	from /usr/gem/gems/jekyll-3.9.2/lib/jekyll/commands/serve/servlet.rb:3:in `<top (required)>'
-	from /usr/gem/gems/jekyll-3.9.2/lib/jekyll/commands/serve.rb:184:in `require_relative'
-	from /usr/gem/gems/jekyll-3.9.2/lib/jekyll/commands/serve.rb:184:in `setup'
-	from /usr/gem/gems/jekyll-3.9.2/lib/jekyll/commands/serve.rb:102:in `process'
-	from /usr/gem/gems/jekyll-3.9.2/lib/jekyll/commands/serve.rb:93:in `block in start'
-	from /usr/gem/gems/jekyll-3.9.2/lib/jekyll/commands/serve.rb:93:in `each'
-	from /usr/gem/gems/jekyll-3.9.2/lib/jekyll/commands/serve.rb:93:in `start'
-	from /usr/gem/gems/jekyll-3.9.2/lib/jekyll/commands/serve.rb:75:in `block (2 levels) in init_with_program'
-	from /usr/gem/gems/mercenary-0.3.6/lib/mercenary/command.rb:220:in `block in execute'
-	from /usr/gem/gems/mercenary-0.3.6/lib/mercenary/command.rb:220:in `each'
-	from /usr/gem/gems/mercenary-0.3.6/lib/mercenary/command.rb:220:in `execute'
-	from /usr/gem/gems/mercenary-0.3.6/lib/mercenary/program.rb:42:in `go'
-	from /usr/gem/gems/mercenary-0.3.6/lib/mercenary.rb:19:in `program'
-	from /usr/gem/gems/jekyll-3.9.2/exe/jekyll:15:in `<top (required)>'
-	from /usr/gem/bin/jekyll:25:in `load'
-	from /usr/gem/bin/jekyll:25:in `<main>'
+./bin/servel_local.sh
 ```
-
-Open http://localhost:4000/