initial

.devcontainer/devcontainer.json

+// For format details, see https://aka.ms/devcontainer.json. For config options, see the
+// README at: https://github.com/devcontainers/templates/tree/main/src/javascript-node
+{
+	"name": "Node.js",
+	// Or use a Dockerfile or Docker Compose file. More info: https://containers.dev/guide/dockerfile
+	"image": "mcr.microsoft.com/devcontainers/javascript-node:0-18",
+
+	// Features to add to the dev container. More info: https://containers.dev/features.
+	// "features": {},
+
+	// Configure tool-specific properties.
+	"customizations": {
+		// Configure properties specific to VS Code.
+		"vscode": {
+			"settings": {},			
+			"extensions": [
+				"dbaeumer.vscode-eslint"
+			]
+		}
+	},
+
+	// Use 'forwardPorts' to make a list of ports inside the container available locally.
+	// "forwardPorts": [],
+
+	// Use 'portsAttributes' to set default properties for specific forwarded ports.
+	"portsAttributes": {
+		"3000": {
+			"label": "Hello Remote World",
+			"onAutoForward": "notify"
+		}
+	},
+
+	// Use 'otherPortsAttributes' to configure any ports that aren't configured using 'portsAttributes'.
+	// "otherPortsAttributes": {
+	// 		"onAutoForward": "silent"
+	// },
+
+	// Use 'postCreateCommand' to run commands after the container is created.
+	"postCreateCommand": "npm install"
+
+	// Configure tool-specific properties.
+	// "customizations": {},
+
+	// Uncomment to connect as root instead. More info: https://aka.ms/dev-containers-non-root.
+	// "remoteUser": "root"
+}

.dockerignore

+# Exclude all...
+*
+
+# ...except essential
+!.eslintrc.json
+!index.js
+!package*.json

.eslintrc.json

+{
+	"root": true,
+	"env": {
+		"node": true,
+		"es6": true
+	},
+	"rules": {
+		"no-console": 0,
+		"eqeqeq":"warn",
+		"no-cond-assign": 0,
+		"no-unused-vars": 1,
+		"no-extra-semi": "warn",
+		"semi": "warn"
+	},
+	"extends": "eslint:recommended",
+	"parserOptions": {
+		"ecmaFeatures": {
+			"experimentalObjectRestSpread": true
+		}
+	}
+}

.gitignore

+/node_modules

.hadolint.yaml

+ignored:
+  - DL3008

.vscode/launch.json

+{
+  "configurations": [
+  {
+    "name": "Launch Program",
+    "program": "${workspaceFolder}/index.js",
+    "request": "launch",
+    "skipFiles": [
+      "<node_internals>/**"
+    ],
+    "type": "node"
+  }
+  ]
+}
\ No newline at end of file

Dockerfile

+# --------------> The build image
+FROM node:18.12.1 AS build
+RUN apt-get update && apt-get install -y --no-install-recommends dumb-init
+ARG NPM_TOKEN
+WORKDIR /usr/src/app
+COPY package*.json /usr/src/app/
+RUN echo "//registry.npmjs.org/:_authToken=$NPM_TOKEN" > .npmrc && \
+   npm ci --only=production && \
+   rm -f .npmrc
+ 
+# --------------> The production image
+FROM node:18.12.1-slim
+ENV NODE_ENV production
+COPY --from=build /usr/bin/dumb-init /usr/bin/dumb-init
+USER node
+WORKDIR /usr/src/app
+COPY --chown=node:node --from=build /usr/src/app/node_modules /usr/src/app/node_modules
+COPY --chown=node:node . /usr/src/app
+CMD ["dumb-init", "node", "index.js"]

index.js

+var express = require("express");
+var app = express();
+
+// Ingress
+app.enable('trust proxy');
+
+// --- <Logger
+
+const winston = require('winston');
+const consoleTransport = new winston.transports.Console();
+const myWinstonOptions = {
+    transports: [consoleTransport]
+};
+const logger = new winston.createLogger(myWinstonOptions);
+
+function logRequest(req, res, next) {
+    logger.info('ip: ' + req.ip + ', hostname: ' + req.hostname + ', url: ' + req.url);
+    next();
+}
+app.use(logRequest);
+
+function logError(err, req, res, next) {
+    logger.error('ip: ' + req.ip + ', hostname: ' + req.hostname + ', url: ' + req.url + ' <-> ' + err);
+    next();
+}
+app.use(logError);
+
+// --- Logger>
+
+app.get("/", (req, res, next) => {
+  res.status(200).send('<a href="/api">/api</a>');
+  next();
+});
+
+app.get("/api", (req, res, next) => {
+  res.status(200).send('<a href="/api/users">/api/users</a>');
+  next();
+});
+
+app.get("/api/users", (req, res, next) => {
+  res.json([
+    {"id": "1", "title": "One"},
+    {"id": "2", "title": "Two"},
+    {"id": "3", "title": "Three"},
+    {"id": "4", "title": "Four"}
+  ]);
+  next();
+});
+
+app.listen(3000, () => {
+ console.log("Server running on port 3000");
+});

package.json

+{
+  "dependencies": {
+    "express": "^4.18.2",
+    "winston": "^3.8.2"
+  }
+}