Update docs-workflow.yaml

Add comparison and substitution for GET_STARTED.md
in documentation workflow.

Closes #79

Signed-off-by: Osman Hadzic <osman.hadzic@secomind.com>

.github/workflows/docs-workflow.yaml

@@ -54,6 +54,20 @@ jobs:
         rm -rf docs/$DOCS_DIRNAME
         mkdir -p docs/$DOCS_DIRNAME
         cp -r astarte-device-sdk-csharp/docs/out/html/* docs/$DOCS_DIRNAME/
+    - name: Compare and copy get started
+      id: cmp-and-copy-get-started
+      if: steps.check-release-branch.outputs.RESULT == 'OK'
+      run: |
+        our_get_started="./astarte-device-sdk-csharp/GET_STARTED.md"
+        their_get_started="./sdk-doc/source/get_started/csharp.md"
+        if cmp -s "$our_get_started" "$their_get_started"; then
+            echo "Get started are identical, no need for substitution"
+            echo "RESULT=NO_SUBSTITUTION" >> $GITHUB_OUTPUT
+        else
+            echo "Our get started is different, substituting theirs"
+            cp "$our_get_started" "$their_get_started"
+            echo "RESULT=SUBSTITUTION" >> $GITHUB_OUTPUT
+        fi
     - name: Commit files
       working-directory: ./docs
       run: |