[no-issue] ci: nextjs docs sync하는 action 작성 (#11)

Create sync-docs.yml

.github/workflows/sync-docs.yml

@@ -0,0 +1,78 @@
+name: Sync Next.js docs to Korean repo
+
+on:
+  schedule:
+    - cron: '0 0 * * *'  # Runs at 00:00 UTC every day
+  workflow_dispatch:  # Allows manual triggering
+
+jobs:
+  sync-docs:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Checkout Next.js
+      uses: actions/checkout@v2
+      with:
+        repository: vercel/next.js
+        ref: canary
+        path: next-js
+        sparse-checkout: |
+          docs
+
+    - name: Checkout Korean repo
+      uses: actions/checkout@v2
+      with:
+        repository: luciancah/nextjs-ko
+        token: ${{ secrets.ACTION_PAT }}
+        path: nextjs-ko
+        ref: main
+
+    - name: Configure Git
+      run: |
+        git config --global user.name github-actions
+        git config --global user.email [email protected]
+
+    - name: Sync and check differences
+      id: sync
+      run: |
+        # Ensure target directory exists
+        mkdir -p nextjs-ko/origin/canary/docs
+
+        # Use rsync to sync files and track changes
+        changes=$(rsync -avrc --delete --out-format="%n" next-js/docs/ nextjs-ko/origin/canary/docs/ | grep -v "/$" || true)
+
+        # If there are changes, commit and push to docs-update branch
+        if [ ! -z "$changes" ]; then
+          cd nextjs-ko
+          git checkout -B docs-update
+          git add origin/canary/docs
+          git commit -m "Sync docs from Next.js
+
+        Changes:
+        $changes"
+          git push -f origin docs-update
+          echo "changes=$changes" >> $GITHUB_OUTPUT
+          echo "has_changes=true" >> $GITHUB_OUTPUT
+        else
+          echo "No changes detected"
+          echo "has_changes=false" >> $GITHUB_OUTPUT
+        fi
+
+    - name: Create issue for new changes
+      if: steps.sync.outputs.has_changes == 'true'
+      uses: actions/github-script@v6
+      with:
+        github-token: ${{secrets.ACTION_PAT}}
+        script: |
+          const changes = `${{ steps.sync.outputs.changes }}`.split('\n').filter(Boolean);
+          await github.rest.issues.create({
+            owner: 'luciancah',
+            repo: 'nextjs-ko',
+            title: 'vercel/next.js canary 문서에 업데이트 사항이 있습니다.',
+            body: `The following files have been updated in the Next.js docs:
+
+          ${changes.map(file => `- ${file}`).join('\n')}
+
+          Please review these changes and update the Korean translation accordingly.
+          The changes have been pushed to the \`docs-update\` branch.`
+          });