Reintroduce a dummy healthy endpoint for compatibility with old helm charts

src/plugins/health.js

@@ -18,6 +18,8 @@ const checkLatestVersion = once(async function () {
   logger.info(`[Health] Check latest version on startup. Time since startup: ${timeSinceStartup()}`)
 })
 
+async function healthy () {}
+
 async function live () {}
 
 async function ready () {
@@ -37,6 +39,11 @@ export default async function healthPlugin (fastify, options) {
     }
   })
 
+  // TODO can be removed. is for compatibility with older helm charts
+  fastify.get('/healthy', async (req, reply) => {
+    await fastify.probe(reply, healthy)
+  })
+
   fastify.get('/live', async (req, reply) => {
     await fastify.probe(reply, live)
   })