Cancel docs build if no changes

vizro-ai/.readthedocs.yaml

@@ -14,3 +14,16 @@ build:
     - cd vizro-ai/ && hatch run docs:mkdocs build
     - mkdir --parents $READTHEDOCS_OUTPUT
     - mv vizro-ai/site/ $READTHEDOCS_OUTPUT/html
+  jobs:
+    post_checkout:
+      # Cancel building pull requests when there aren't changed in the docs directory or YAML file.
+      # You can add any other files or directories that you'd like here as well,
+      # like your docs requirements file, or other files that will change your docs build.
+      #
+      # If there are no changes (git diff exits with 0) we force the command to return with 183.
+      # This is a special exit code on Read the Docs that will cancel the build immediately.
+      - |
+        if [ "$READTHEDOCS_VERSION_TYPE" = "external" ] && git diff --quiet origin/main -- vizro-ai/docs/ vizro-ai/.readthedocs.yaml;
+        then
+          exit 183;
+        fi

vizro-core/.readthedocs.yaml

@@ -14,3 +14,16 @@ build:
     - cd vizro-core/ && hatch run docs:mkdocs build
     - mkdir --parents $READTHEDOCS_OUTPUT
     - mv vizro-core/site/ $READTHEDOCS_OUTPUT/html
+  jobs:
+    post_checkout:
+      # Cancel building pull requests when there aren't changed in the docs directory or YAML file.
+      # You can add any other files or directories that you'd like here as well,
+      # like your docs requirements file, or other files that will change your docs build.
+      #
+      # If there are no changes (git diff exits with 0) we force the command to return with 183.
+      # This is a special exit code on Read the Docs that will cancel the build immediately.
+      - |
+        if [ "$READTHEDOCS_VERSION_TYPE" = "external" ] && git diff --quiet origin/main -- vizro-core/docs/ vizro-core/.readthedocs.yaml;
+        then
+          exit 183;
+        fi