add healthcheck

Dockerfile

@@ -8,4 +8,5 @@ RUN npm install
 COPY . .
 RUN npm run build
 RUN npm prune --prod
+HEALTHCHECK CMD ["wget", "--no-verbose", "--tries=1", "--spider", "http://127.0.0.1:3000/up", "||", "exit", "1"]
 CMD ["npm", "start"]

src/server.ts

@@ -37,7 +37,7 @@ await app.register(fastifyCors, {
 });
 
 app.addHook("onRequest", async (request, reply) => {
-    if (request.method === "OPTIONS") {
+    if (request.method === "OPTIONS" || request.url === "/up") {
         return;
     }
     try {
@@ -223,6 +223,8 @@ app.get("/searches/missed/rank", async (request, reply) => {
     return reply.status(200).send({ data: await getMissedSearchRank(dates, limit), success: true });
 });
 
+app.get("/up", async(request, reply) => reply.status(204));
+
 await app.listen({
     host: "0.0.0.0",
     port: 3000