Docker/Node.js

Dockerfile

# Configures a Node runner and copies the current folder content
# to use as the program source.

# Use the following commands to build and run the server.
#   docker build -t node-runner .
#   docker run --rm node-runner

FROM node:alpine

WORKDIR /usr/src/app
COPY . .

CMD ["node", "app.js"]

app.js

// Displays "Hello world!"
//
// References:
//   https://www.w3schools.com/jsref/met_console_log.asp

console.log("Hello world!");

Try It

Online Free

1. Use Play with Docker. Create an account and/or log in.
2. Start an interactive session and add a new instance.
3. In the terminal window, enter the following commands:
   • touch Dockerfile
   • touch index.js
4. Use the Editor button to edit both files and save the contents above into each respective file.
5. Run the following commands:
   • docker build -t node-runner .
   • docker run --rm node-runner

On Your Own System

1. Install Docker Desktop or the Docker Engine.
2. Save the files above into a new Docker Node folder:
   • Dockerfile
   • index.js
3. At a command prompt, change to the Docker Node folder and then run the following commands:
   • docker build -t node-runner .
   • docker run --rm node-runner

See Also

• Server-Side Scripting
• JavaScript Programming
• Docker: The best way to learn Docker for Free: Play-With-Docker (PWD)

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