feat: add /health endpoint and Docker healthcheck

server.ts

@@ -16,6 +16,10 @@ router.get("/", (ctx) => {
   ctx.response.body = "Hello world";
 });
 
+router.get("/health", (ctx) => {
+  ctx.response.body = { status: "ok" };
+});
+
 router.get("/notes", (ctx) => {
   const cursor = ctx.request.url.searchParams.get("cursor") ?? undefined;
   const limit = Number(ctx.request.url.searchParams.get("limit")) || PAGINATION;