You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
32 lines
1.1 KiB
JavaScript
32 lines
1.1 KiB
JavaScript
5 years ago
|
// simple node web server that displays hello world
|
||
|
|
// optimized for Docker image
|
||
|
|
|
||
|
|
const express = require("express");
|
||
|
|
// this example uses express web framework so we know what longer build times
|
||
|
|
// do and how Dockerfile layer ordering matters. If you mess up Dockerfile ordering
|
||
|
|
// you'll see long build times on every code change + build. If done correctly,
|
||
|
|
// code changes should be only a few seconds to build locally due to build cache.
|
||
|
|
|
||
|
|
const morgan = require("morgan");
|
||
|
|
// morgan provides easy logging for express, and by default it logs to stdout
|
||
|
|
// which is a best practice in Docker. Friends don't let friends code their apps to
|
||
|
|
// do app logging to files in containers.
|
||
|
|
|
||
|
|
// Appi
|
||
|
|
const app = express();
|
||
|
|
|
||
|
|
app.use(morgan("common"));
|
||
|
|
|
||
|
|
app.get("/", function(req, res) {
|
||
|
|
res.json({ message: "Hello Docker World!" });
|
||
|
|
});
|
||
|
|
|
||
|
|
app.get("/healthz", function(req, res) {
|
||
|
|
// do app logic here to determine if app is truly healthy
|
||
|
|
// you should return 200 if healthy, and anything else will fail
|
||
|
|
// if you want, you should be able to restrict this to localhost (include ipv4 and ipv6)
|
||
|
|
res.send("I am happy and healthy\n");
|
||
|
|
});
|
||
|
|
|
||
|
|
module.exports = app;
|