feat: add workflow to clear cache on push

.github/workflows/clear-website-cache.yml

@@ -0,0 +1,23 @@
+name: Clear website cache
+
+on:
+  workflow_dispatch:
+  push:
+    branches:
+      - main
+
+
+jobs:
+  clear-cache:
+    runs-on: ubuntu-latest
+    env:
+      TOKEN: ${{ secrets.WEBSITE_CACHE_TOKEN }}
+    steps:
+      - name: Clear HTML
+        run: |
+          curl -X PURGE -H "Accept: application/json" -H "Fastly-Key: $TOKEN" -H "host: newrelic.com" --location "https://newrelic.com/instant-observability"
+
+      - name: Clear page data
+        run: |
+          curl -X PURGE -H "Accept: application/json" -H "Fastly-Key: $TOKEN" -H "host: newrelic.com" --location "https://newrelic.com/instant-observability/page-data/index/page-data.json"
+

README.md

@@ -67,6 +67,11 @@ Runs every 4 hours to pull in new quickstarts from Nerdgraph (New Relic's GraphQ
 
 Runs every day to get various pages that relate to each quickstart from our vendor.
 
+### Clear website cache
+
+Runs on every push to the `main` branch and clears out the `newrelic.com/instant-observability` cache.
+This can also be kicked off manually via a workflow run.
+
 ## ☁️  Hosting
 
 - This site is built and hosted on [Gatsby Cloud](https://www.gatsbyjs.com/products/cloud/)