Lab done

Dockerfile

@@ -0,0 +1,5 @@
+FROM node:8.14.0-alpine
+COPY . /root
+RUN npm install express mysql
+CMD node /root/index.js
+EXPOSE 3000

answers.md

@@ -1,41 +1,59 @@
 # Answers
 
-Lastname:
-Firstname:
+YU:Daniel:
 
 ## 2.2
-command:
+command:sudo docker run app
 
 ## 2.3
-question:
-command:
+question:the port is not opened
+command:sudo docker run -p 3000:3000 app
 
 ## 2.5
-question:
-command:
+question:We have to name the tag of the image to match the repository.
+command:sudo docker login
+	sudo docker tag app yudada31/devops_lab
+	sudo docker push yudada31/devops_lab
 
 ## 2.6
-command:
+command:sudo docker prune -a
 
-question:
-command:
+question:First, we need to pull the image: "sudo docker pull yudada31/devops_lab".
+	 Then start a container again with the name I pushed on Docker hub
+command:sudo docker create yudada31/devops_lab
 
-command:
+command:sudo docker run --detach yudada31/devops_lab
 
 ## 2.7
-question:
-question:
-command:
+question:by running the command "sudo docker ps -a", we can get a list of the container with its IDs, names, status and other informations. The status is up.
+question:The name of the container is modest_feynman.
+command:sudo docker ps -a
 
-command:
+command:sudo docker rename modest-feynman web_API
 
 ## 2.8
-question:
-output:
+question:The OS of the container is Ubuntu.
+output:DISTRIB_ID=Ubuntu
+DISTRIB_RELEASE=18.04
+DISTRIB_CODENAME=bionic
+DISTRIB_DESCRIPTION="Ubuntu 18.04.1 LTS"
+NAME="Ubuntu"
+VERSION="18.04.1 LTS (Bionic Beaver)"
+ID=ubuntu
+ID_LIKE=debian
+PRETTY_NAME="Ubuntu 18.04.1 LTS"
+VERSION_ID="18.04"
+HOME_URL="https://www.ubuntu.com/"
+SUPPORT_URL="https://help.ubuntu.com/"
+BUG_REPORT_URL="https://bugs.launchpad.net/ubuntu/"
+PRIVACY_POLICY_URL="https://www.ubuntu.com/legal/terms-and-policies/privacy-policy"
+VERSION_CODENAME=bionic
+UBUNTU_CODENAME=bionic
+
 
 ## 3.1
-command:
+command:sudo docker-compose up
 
 ## 3.4
-command:
-command:
+command:sudo docker-compose up -d
+command:sudo docker-compose logs

docker-compose.yml

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+version: '3'
+services:
+  my-service:
+    image: yudada31/devops_lab

express.js

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+/*!
+ * express
+ * Copyright(c) 2009-2013 TJ Holowaychuk
+ * Copyright(c) 2013 Roman Shtylman
+ * Copyright(c) 2014-2015 Douglas Christopher Wilson
+ * MIT Licensed
+ */
+
+'use strict';
+
+/**
+ * Module dependencies.
+ */
+
+var bodyParser = require('body-parser')
+var EventEmitter = require('events').EventEmitter;
+var mixin = require('merge-descriptors');
+var proto = require('./application');
+var Route = require('./router/route');
+var Router = require('./router');
+var req = require('./request');
+var res = require('./response');
+
+/**
+ * Expose `createApplication()`.
+ */
+
+exports = module.exports = createApplication;
+
+/**
+ * Create an express application.
+ *
+ * @return {Function}
+ * @api public
+ */
+
+function createApplication() {
+  var app = function(req, res, next) {
+    app.handle(req, res, next);
+  };
+
+  mixin(app, EventEmitter.prototype, false);
+  mixin(app, proto, false);
+
+  // expose the prototype that will get set on requests
+  app.request = Object.create(req, {
+    app: { configurable: true, enumerable: true, writable: true, value: app }
+  })
+
+  // expose the prototype that will get set on responses
+  app.response = Object.create(res, {
+    app: { configurable: true, enumerable: true, writable: true, value: app }
+  })
+
+  app.init();
+  return app;
+}
+
+/**
+ * Expose the prototypes.
+ */
+
+exports.application = proto;
+exports.request = req;
+exports.response = res;
+
+/**
+ * Expose constructors.
+ */
+
+exports.Route = Route;
+exports.Router = Router;
+
+/**
+ * Expose middleware
+ */
+
+exports.json = bodyParser.json
+exports.query = require('./middleware/query');
+exports.static = require('serve-static');
+exports.urlencoded = bodyParser.urlencoded
+
+/**
+ * Replace removed middleware with an appropriate error message.
+ */
+
+var removedMiddlewares = [
+  'bodyParser',
+  'compress',
+  'cookieSession',
+  'session',
+  'logger',
+  'cookieParser',
+  'favicon',
+  'responseTime',
+  'errorHandler',
+  'timeout',
+  'methodOverride',
+  'vhost',
+  'csrf',
+  'directory',
+  'limit',
+  'multipart',
+  'staticCache'
+]
+
+removedMiddlewares.forEach(function (name) {
+  Object.defineProperty(exports, name, {
+    get: function () {
+      throw new Error('Most middleware (like ' + name + ') is no longer bundled with Express and must be installed separately. Please see https://github.com/senchalabs/connect#middleware.');
+    },
+    configurable: true
+  });
+});