Modernization

.gitignore

@@ -1,3 +1,6 @@
+**/node_modules
+**/package-lock.json
+
 .sass-cache
 !.gitkeep
 03-express-gulp-watch/app/public/stylesheets/style.css

00-basic-express-generator/Dockerfile

@@ -1,13 +1,15 @@
-FROM node:0.10.38
-
-RUN mkdir /src
-
-RUN npm install express-generator -g
-
-WORKDIR /src
-ADD app/package.json /src/package.json
-RUN npm install
-
-EXPOSE 3000
-
-CMD node app/bin/www
+ARG IMAGE_VERSION_BUILD=latest
+ARG IMAGE_VERSION=18.14.2-bullseye-slim
+ARG NODE_ENV=development
+
+FROM node:${IMAGE_VERSION_BUILD} AS build
+RUN apt-get update && apt-get install -y --no-install-recommends dumb-init
+
+FROM node:${IMAGE_VERSION}
+ENV NODE_ENV ${NODE_ENV}
+COPY --from=build /usr/bin/dumb-init /usr/bin/dumb-init
+RUN mkdir /usr/src/app
+RUN chown node:node /usr/src/app
+WORKDIR /usr/src/app
+USER node
+CMD ["dumb-init", "npm", "run", "start"]

00-basic-express-generator/README.md

@@ -10,19 +10,14 @@ Install [Docker](https://www.docker.com/) on your system.
 * [Install instructions](https://docs.docker.com/installation/ubuntulinux/) for Ubuntu Linux
 * [Install instructions](https://docs.docker.com/installation/) for other platforms
 
-Install [Docker Compose](http://docs.docker.com/compose/) on your system.
-
-* Python/pip: `sudo pip install -U docker-compose`
-* Other: ``curl -L https://github.com/docker/compose/releases/download/1.1.0/docker-compose-`uname -s`-`uname -m` > /usr/local/bin/docker-compose; chmod +x /usr/local/bin/docker-compose``
+[Install Docker Compose](https://docs.docker.com/compose/install/) on your system.
 
 ## Setup
 
-1. Run `docker-compose build`. It will pull a base image from the Docker registry and install [express-generator](https://github.com/expressjs/generator) globally in your container. The rest can be ignored for now.
-
-2. Run `docker-compose run web express app`. This will bootstrap a new Express app in your container in the `app` subfolder. Since it already exists, Express will ask you if you want to override, which you can answer with `yes`.
+1. Run `docker-compose build`. This will pull the base images, and install image dependencies.
 
-3. Run `docker-compose build` again. It will install install all dependencies from the (generated) package.json, expose port 3000 to the host, and instruct the container to execute `node app/bin/www` on start up.
+2. Run `docker-compose run web npm install`. This will install the `package.json` dependencies in the `app` sub-folder. Since this folder is mounted into the Docker image as a volume, any changes made in the image or on your local file system are synced.
 
 ## Start
 
-Run `docker-compose up` to create and start the container. The app should then be running on your docker daemon on port 3030 (On OS X you can use `boot2docker ip` to find out the IP address).
+Run `docker-compose up` to start the container. The app should then be running at http://localhost:3000.

00-basic-express-generator/app/app.js

@@ -1,60 +1,11 @@
-var express = require('express');
-var path = require('path');
-var favicon = require('serve-favicon');
-var logger = require('morgan');
-var cookieParser = require('cookie-parser');
-var bodyParser = require('body-parser');
+const express = require('express');
+const app = express();
+const port = process.env.APP_PORT;
 
-var routes = require('./routes/index');
-var users = require('./routes/users');
-
-var app = express();
-
-// view engine setup
-app.set('views', path.join(__dirname, 'views'));
-app.set('view engine', 'jade');
-
-// uncomment after placing your favicon in /public
-//app.use(favicon(__dirname + '/public/favicon.ico'));
-app.use(logger('dev'));
-app.use(bodyParser.json());
-app.use(bodyParser.urlencoded({ extended: false }));
-app.use(cookieParser());
-app.use(express.static(path.join(__dirname, 'public')));
-
-app.use('/', routes);
-app.use('/users', users);
-
-// catch 404 and forward to error handler
-app.use(function(req, res, next) {
-    var err = new Error('Not Found');
-    err.status = 404;
-    next(err);
+app.get('/', (req, res) => {
+    res.send('Hello World!')
 });
 
-// error handlers
-
-// development error handler
-// will print stacktrace
-if (app.get('env') === 'development') {
-    app.use(function(err, req, res, next) {
-        res.status(err.status || 500);
-        res.render('error', {
-            message: err.message,
-            error: err
-        });
-    });
-}
-
-// production error handler
-// no stacktraces leaked to user
-app.use(function(err, req, res, next) {
-    res.status(err.status || 500);
-    res.render('error', {
-        message: err.message,
-        error: {}
-    });
-});
-
-
-module.exports = app;
+app.listen(port, () => {
+    console.log(`Example app listening on port ${port}`)
+});

00-basic-express-generator/app/package.json

@@ -3,15 +3,9 @@
   "version": "0.0.0",
   "private": true,
   "scripts": {
-    "start": "node ./bin/www"
+    "start": "node app.js"
   },
   "dependencies": {
-    "body-parser": "~1.10.2",
-    "cookie-parser": "~1.3.3",
-    "debug": "~2.1.1",
-    "express": "~4.11.1",
-    "jade": "~1.9.1",
-    "morgan": "~1.5.1",
-    "serve-favicon": "~2.2.0"
+    "express": "4.18.2"
   }
 }

00-basic-express-generator/docker-compose.yml

@@ -1,6 +1,12 @@
-web:
-  build: .
-  volumes:
-    - "./app:/src/app"
-  ports:
-    - "3030:3000"
+version: "3.9"
+
+services:
+  web:
+    build: .
+    user: "node:node"
+    environment:
+      - APP_PORT=${APP_PORT:-3000}
+    volumes:
+      - "./app:/usr/src/app"
+    ports:
+      - "3000:3000"

01-express-nodemon/Dockerfile

@@ -1,15 +1,15 @@
-FROM node:0.10.38
-
-RUN mkdir /src
-
-RUN npm install nodemon -g
-
-WORKDIR /src
-ADD app/package.json /src/package.json
-RUN npm install
-
-ADD app/nodemon.json /src/nodemon.json
-
-EXPOSE 3000
-
-CMD npm start
+ARG IMAGE_VERSION_BUILD=latest
+ARG IMAGE_VERSION=18.14.2-bullseye-slim
+ARG NODE_ENV=development
+
+FROM node:${IMAGE_VERSION_BUILD} AS build
+RUN apt-get update && apt-get install -y --no-install-recommends dumb-init
+
+FROM node:${IMAGE_VERSION}
+ENV NODE_ENV ${NODE_ENV}
+COPY --from=build /usr/bin/dumb-init /usr/bin/dumb-init
+RUN mkdir /usr/src/app
+RUN chown node:node /usr/src/app
+WORKDIR /usr/src/app
+USER node
+CMD ["dumb-init", "npm", "run", "start"]