├── .gitignore
├── .dockerignore
├── image1.png
├── image2.png
├── image3.png
├── image4.png
├── image5.png
├── nodeJsDocker.png
├── package.json
├── server.js
├── Dockerfile
├── LICENSE
└── README.md
/.gitignore:
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1 | node_modules
2 |
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/.dockerignore:
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1 | node_modules
2 | npm-debug.log
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/image1.png:
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https://raw.githubusercontent.com/chandu-muthyala/Dockerizing-a-NodeJS-web-app/master/image1.png
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/image2.png:
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/image3.png:
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/image4.png:
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/image5.png:
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/nodeJsDocker.png:
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/package.json:
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1 | {
2 | "name": "docker_web_app",
3 | "version": "1.0.0",
4 | "description": "Node.js on Docker",
5 | "author": "cmuth001@odu.edu",
6 | "main": "server.js",
7 | "scripts": {
8 | "start": "node server.js"
9 | },
10 | "dependencies": {
11 | "express": "^4.16.1"
12 | }
13 | }
14 |
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/server.js:
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1 | 'use strict';
2 |
3 | const express = require('express');
4 |
5 | // Constants
6 | const PORT = 8080;
7 | const HOST = '0.0.0.0';
8 |
9 | // App
10 | const app = express();
11 | app.get('/', (req, res) => {
12 | res.send('Hello world\n');
13 | });
14 |
15 | app.listen(PORT, HOST);
16 | console.log(`Running on http://${HOST}:${PORT}`);
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/Dockerfile:
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1 | FROM node:10
2 |
3 | # Create app directory
4 | WORKDIR /usr/app
5 |
6 | # Install app dependencies
7 | # A wildcard is used to ensure both package.json AND package-lock.json are copied
8 | # where available (npm@5+)
9 | COPY package*.json ./
10 |
11 | RUN npm install
12 | # If you are building your code for production
13 | # RUN npm ci --only=production
14 |
15 | # Bundle app source
16 | COPY . .
17 |
18 | EXPOSE 8080
19 | CMD [ "node", "server.js" ]
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/LICENSE:
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1 | MIT License
2 |
3 | Copyright (c) 2019 Chandrasekhar Reddy Muthyala
4 |
5 | Permission is hereby granted, free of charge, to any person obtaining a copy
6 | of this software and associated documentation files (the "Software"), to deal
7 | in the Software without restriction, including without limitation the rights
8 | to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
9 | copies of the Software, and to permit persons to whom the Software is
10 | furnished to do so, subject to the following conditions:
11 |
12 | The above copyright notice and this permission notice shall be included in all
13 | copies or substantial portions of the Software.
14 |
15 | THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 | IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 | FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
18 | AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19 | LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
20 | OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
21 | SOFTWARE.
22 |
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/README.md:
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1 | # Dockerizing-a-NodeJS-web-app
2 |
3 | 
8 |
9 |
10 |
11 | Create a simple nodeJs application and deploy it onto a docker container.
12 |
13 | 1. Create a working directory
14 | > mkdir
15 |
16 | 2. Running this command in working directory will initialize your project
17 | > npm init
18 |
19 | This will create a **package.json** file in the folder, that file contains app dependency packages.
20 |
21 | Replace the following code of package.json
22 |
23 | ```js
24 | // package.json
25 |
26 | {
27 | "name": "docker_web_app",
28 | "version": "1.0.0",
29 | "description": "Node.js deploy on Docker container",
30 | "author": "cmuth001@odu.edu",
31 | "main": "server.js",
32 | "scripts": {
33 | "start": "node server.js"
34 | },
35 | "dependencies": {
36 | "express": "^4.16.1"
37 | }
38 | }
39 | ```
40 |
41 | 2. Running this command will install all the dependencies from package.json
42 | > npm install
43 | 3. Lets create a **server.js** file that defines a web-app using an Express framework.
44 |
45 |
46 | ```js
47 | // server.js
48 | 'use strict';
49 | var express = require('express');
50 | var app = express();
51 | app.get('/', function (req, res) {
52 | res.send('Hello World!');
53 | });
54 | app.listen(3000, function () {
55 | console.log('Example app listening on port 3000!');
56 | });
57 |
58 | ```
59 |
60 | 4. Lets test the application, run the below command
61 | > node server.js
62 |
63 | If you followed the above steps on your system, you will see the same output as below image: [http://localhost:3000/](http://localhost:3000/)
64 |
65 |
66 | 
71 |
72 |
73 | Now node.js app is running successfully.
74 |
75 | Lets try running the same node.js application running on the docker container. To run the application on the docker conatiner we need a docker image.
76 |
77 | First, we will create a docker image for the application.
78 |
79 | 5. Create a **Dockerfile**
80 | > touch Dockerfile
81 | 6. Dockerfile should look like this
82 | ```
83 | FROM node:10
84 | # Create app directory
85 | WORKDIR /usr/app
86 |
87 | # Install app dependencies
88 | # A wildcard is used to ensure both package.json AND package-lock.json are copied
89 | # where available (npm@5+)
90 | COPY package*.json ./
91 |
92 | RUN npm install
93 | # If you are building your code for production
94 | # RUN npm ci --only=production
95 |
96 | # Bundle app source
97 | COPY . .
98 | EXPOSE 3000
99 | CMD [ "node", "server.js" ]
100 |
101 | ```
102 | 7. Create **.dockerignore** file with following content
103 |
104 | ```
105 | node_modules
106 | npm-debug.log
107 | ```
108 | This will prevent from copying onto docker image.
109 |
110 | 8. Building Docker image
111 | > docker build -t node-web-app .
112 |
113 |
114 | 
119 |
120 | 9. Check the Docker images
121 | > docker images
122 |
123 |
124 | 
129 |
130 | 10. Run the docker image
131 | > docker run -p 49160:3000 -d node-web-app
132 |
133 | 11. Get the container id
134 | > docker ps
135 |
136 |
137 | 
142 |
143 |
144 | 12. Lets know where it is running on
145 | > docker logs
146 |
147 | ```
148 | output:
149 | Example app listening on port 3000!
150 | ```
151 | 13. If you followed the above steps on your system, you will see the sam output as below image: [http://localhost:49160/](http://localhost:49160/)
152 |
153 |
154 | 
159 |
160 |
161 | I hope this tutorial helped you get up and running a simple Node.js application on Docker container.
162 |
163 |
164 |
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