Change GitHub action so it purges the Cloudflare cache for www.dataforcanada.org and enables running workflow manually from the Actions tab

.github/workflows/deploy_worker.yaml

@@ -5,6 +5,8 @@ on:
       - main
     paths:
       - 'worker/*'
+  # Allows you to run this workflow manually from the Actions tab
+  workflow_dispatch:
 
 # Allow only one concurrent deployment, skipping runs queued between the run in-progress and latest queued.
 concurrency:
@@ -23,4 +25,10 @@ jobs:
         with:
           apiToken: ${{ secrets.CLOUDFLARE_API_TOKEN_WORKER }}
           accountId: ${{ secrets.CLOUDFLARE_ACCOUNT_ID }}
-          workingDirectory: "worker"
+          workingDirectory: "worker"
+      - name: Purge Cloudflare cache
+        run: |
+          curl --location 'https://api.cloudflare.com/client/v4/zones/${{ secrets.CLOUDFLARE_ZONE_ID }}/purge_cache' \
+            --header 'Content-Type: application/json' \
+            --header 'Authorization: Bearer ${{ secrets.CLOUDFLARE_API_TOKEN_PURGE_CACHE }}' \
+            --data '{"hosts": ["www.dataforcanada.org"]}'