fix: make site health check eaiser to use

.env.example

@@ -0,0 +1,23 @@
+# ---
+# These are used for the site health script, run from GitHub Actions. They can
+# be set manually if you need to run the script locally.
+
+# Coder admins for Instatus can get this value from https://dashboard.instatus.com/developer
+export INSTATUS_API_KEY=
+
+# Can be obtained from calling the Instatus API with a valid token. This value
+# might not actually need to be private, but better safe than sorry
+# https://instatus.com/help/api/status-pages
+export INSTATUS_PAGE_ID=
+
+# Can be obtained from calling the Instatus API with a valid token. This value
+# might not actually need to be private, but better safe than sorry
+# https://instatus.com/help/api/components
+export INSTATUS_COMPONENT_ID=
+
+# Can be grabbed from https://vercel.com/codercom/registry/stores/integration/upstash/store_1YDPuBF4Jd0aNpuV/guides
+# Please make sure that the token you use is KV_REST_API_TOKEN; the script needs
+# to be able to queries and mutations
+export VERCEL_API_KEY=
+
+# ---