chore: update jenkins docker cloud usage

source/_posts/2025/jenkins-docker-cloud.md

@@ -1,5 +1,5 @@
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-title: Why use Jenkins Docker Cloud
+title: How to use Jenkins Docker Cloud
 tags:
   - Cloud
   - Docker
@@ -100,10 +100,6 @@ pipeline {
 
 Here is more details about using Docker with pipeline: https://www.jenkins.io/doc/book/pipeline/docker/
 
-## Last but not least
-
-I don't like to use `docker { ... }` too much, becuase it need to work well with you host environment. otherwise, you may have permission issues when you clean workspace at your `post` stage. then you have to use root permissions to clean workspace to avoid your host disk is full.
-
 Feel free to comment if you have any questions.
 
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