diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 0b94665..76d2018 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -4,6 +4,9 @@ name: publish docker image
 on:
   push:
     branches: ['main']
+    paths:
+      - 'Dockerfile'
+      - '.github/workflows/build.yml'
 
 env:
   REGISTRY: ghcr.io
diff --git a/README.md b/README.md
index 5bc4f24..e6ccfe1 100644
--- a/README.md
+++ b/README.md
@@ -5,3 +5,8 @@ This is a Docker image for Atlantis with Cdktf and Bun.
 It is based on the official Atlantis image, but with Cdktf and Bun installed.
 
 It is intended to be used in a CI/CD pipeline to deploy infrastructure as code.
+
+## References
+
+- https://www.runatlantis.io/docs/custom-workflows.html#cdktf
+- https://github.com/runatlantis/atlantis/pkgs/container/atlantis
\ No newline at end of file