diff --git a/.github/workflows/docker-image-ci.yml b/.github/workflows/docker-image-ci.yml
index 18368d3..c3af5d6 100644
--- a/.github/workflows/docker-image-ci.yml
+++ b/.github/workflows/docker-image-ci.yml
@@ -1,6 +1,12 @@
 name: docker image ci
 
-on: push
+on:
+  push:
+    paths:
+    - '**'
+    - '!LICENSE'
+    - '!README.md'
+    - '!images'
 
 jobs:
   test:
diff --git a/README.md b/README.md
index 834337d..b300b68 100644
--- a/README.md
+++ b/README.md
@@ -169,7 +169,7 @@ By pulling docker images, you can reduce the overall execution time of your work
 
 > **NOTES**: Do not use `GITHUB_TOKEN`.
 >
-> This action supports `GITHUB_TOKEN` but it has some problems to deploy to GitHub Pages. See [Issue #9]
+> This action supports `GITHUB_TOKEN` but it has some problems to deploy to GitHub Pages. GitHub team is investigating that. See [Issue #9]
 
 [Issue #9]: https://github.com/peaceiris/actions-gh-pages/issues/9