simple nodejs dockerfile

1# Choose the Image which has Node installed already
2FROM node:alpine
3
4# COPY all the files from Current Directory into the Container
5COPY ./ ./
6
7# Install the Project Dependencies like Express Framework
8RUN npm install
9
10# Tell that this image is going to Open a Port 
11EXPOSE 8080
12
13# Default Command to launch the Application
14CMD ["npm", "start"]

1FROM node:12
2
3# Create app directory
4WORKDIR /usr/src/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+)
9COPY package*.json ./
10
11RUN npm install
12# If you are building your code for production
13# RUN npm ci --only=production
14
15# Bundle app source
16COPY . .
17
18EXPOSE 8080
19CMD [ "node", "server.js" ]

1{
2  "name": "docker_web_app",
3  "version": "1.0.0",
4  "description": "Node.js on Docker",
5  "author": "First Last <first.last@example.com>",
6  "main": "server.js",
7  "scripts": {
8    "start": "node server.js"
9  },
10  "dependencies": {
11    "express": "^4.16.1"
12  }
13}