Halt if no changes to docs

.circleci/config.yml

@@ -41,6 +41,12 @@ jobs:
           command: |
             cp ~/synthetix-v3/docs/smart-contracts.md ./for-developers/smart-contracts.md
 
+            STATUS=$(git status)
+            if [[ $STATUS == *"nothing to commit, working tree clean"* ]]; then
+              echo "SKIP. Working tree is clean. No changes to Smart Contracts docs"
+              exit 0
+            fi
+
             git branch smart-contracts
             git checkout smart-contracts
 
@@ -55,6 +61,12 @@ jobs:
           working_directory: ~/synthetix-gitbook-v3
           name: "Create Pull Request for smart-contracts branch"
           command: |
+            STATUS=$(git status)
+            if [[ $STATUS == *"nothing to commit, working tree clean"* ]]; then
+              echo "SKIP. Working tree is clean. No changes to Smart Contracts docs"
+              exit 0
+            fi
+
             PR_URL=$(curl -s -H "Authorization: token $GITHUB_TOKEN" \
               https://api.github.com/repos/Synthetixio/Synthetix-Gitbook-v3/pulls?state=open | \
               jq -r '.[] | select(.head.ref=="smart-contracts") | .html_url')