add health endpoint

Dockerfile

@@ -48,6 +48,9 @@ EXPOSE 3000
 ENV PORT=3000
 ENV HOSTNAME="0.0.0.0"
 
+HEALTHCHECK --interval=30s --timeout=10s --start-period=30s --retries=3 \
+  CMD curl -f http://localhost:3000/api/health || exit 1
+
 USER nextjs
 
 CMD ["node", "server.js"]

app/api/health/route.ts

@@ -0,0 +1,3 @@
+import { NextResponse } from "next/server";
+
+export const GET = () => NextResponse.json({ status: "healthy" });

docker-compose.yml

@@ -22,3 +22,9 @@ services:
     privileged: true
     restart: always
     init: true
+    healthcheck:
+      test: ["CMD", "curl", "-f", "http://localhost:3000/api/health"]
+      interval: 30s
+      timeout: 10s
+      start_period: 30s
+      retries: 3