add r2 upload action

Author: kentcdodds

.github/workflows/r2-upload.yml

@@ -0,0 +1,32 @@
+name: Upload to R2
+
+on:
+  push:
+    branches:
+      - main
+    paths:
+      - 'content/**'
+
+jobs:
+  upload:
+    runs-on: ubuntu-latest
+
+    permissions:
+      contents: read
+
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Configure AWS Credentials
+        uses: aws-actions/configure-aws-credentials@v4.1.0
+        with:
+          aws-access-key-id: ${{ secrets.R2_ACCESS_KEY_ID }}
+          aws-secret-access-key: ${{ secrets.R2_SECRET_ACCESS_KEY }}
+          aws-region: auto
+          endpoint-url: https://a41d50ecaf0ae0f86dd1824ef6729cb2.r2.cloudflarestorage.com
+
+      - name: Sync content directory to R2
+        run: |
+          aws s3 sync content/ s3://kcd-rag/content/ \
+            --endpoint-url https://a41d50ecaf0ae0f86dd1824ef6729cb2.r2.cloudflarestorage.com \
+            --size-only --delete