Fix docs deploy check for changes to docs (#139)

* Try to fix check for changes in docs

* fix typo

* Remove tab

* Fix another typo

* Do not use deprecated set-output cmd

* Commmit empty file in docs

* Fix diff command to look for changes in docs

* Try again to fix diff command

* Try adding doc check into same deploy-docs doc

* Fix invalid workflow

* Try fixing diff command again

* Revert "Commmit empty file in docs"

This reverts commit acaefbd.

* Add console logs for debugging

* Fix bash conditional

* Add test file to trigger docs deploy

* Fix conditional again

* Fix git diff expression

* Try again to fix git diff expression

* Try to fix diff by checking out origin/master

* Try again to fix conditional

* Add back origin/master reference in diff

* REmove test file

* Fix indentation

.github/workflows/build-and-deploy.yml

@@ -15,15 +15,24 @@ jobs:
   deploy-docs:
     runs-on: ubuntu-latest
 
-    # Only run this job if there were changes in the docs folder
-    paths:
-      - ./docs/*
-
     steps:
       - name: Checkout
         uses: actions/checkout@v4
 
+      - name: Check for changes in docs folder
+        id: docs_check
+        run: |
+         git fetch origin master
+         if  [[ $(git diff --name-only origin/${{ github.event.repository.default_branch }} -- './docs') ]]; then
+           echo "There have been changes to the docs."
+           echo "docs_changed=true" >> $GITHUB_OUTPUT
+         else
+           echo "No changes to the docs."
+           echo "docs_changed=false" >> $GITHUB_OUTPUT
+         fi
+
       - name: Deploy documentation
+        if: ${{ steps.docs_check.outputs.docs_changed == 'true' }}
         uses: JamesIves/github-pages-deploy-action@v4
         with:
           folder: docs