Migrate Dockerfile to Node.js Base Image for Proper Application Deployment

[Aditya-269]

Description

This pull request updates the Dockerfile to use a Node.js-based image with a multi-stage build setup for Music Blocks.
The goal is to create an optimized production container by separating the build and runtime environments.

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Changes Made

• First Stage (Build Stage):

  • Base image: node:18-slim
  • Set working directory to /app.
  • Installed all dependencies (npm install).
  • Copied source code into container.
  • Ran linting (npm run lint) and testing (npm run test).

• Second Stage (Production Stage):

  • Base image: node:18-slim (clean and minimal).
  • Created a non-root user (appuser) for better security.
  • Installed only production dependencies (npm install --production).
  • Copied built application from the build stage.
  • Set correct file permissions.
  • Exposed port 3000.
  • Configured the container to start with npm run serve.

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Related Issue

Closes #4661

[github-actions]

✅ All Jest tests passed! This PR is ready to merge.

[Aditya-269]

please review this pr

[Ubayed-Bin-Sufian]

@MostlyKIGuess Please review.

[MostlyKIGuess]

I tried building both of them.

Even tho it being multi-stage , it comes bigger almost twice than the one that we have right now, so that's something that can improve.

[MostlyKIGuess]

we technically don't need this.

[MostlyKIGuess]

If we can have the same size, it would be nice to have.

[NaitikSuneri]

✅ Improvements:
Single npm install in build stage and reusing node_modules.

Proper .dockerignore assumed (e.g., excludes node_modules, .git, etc.).

More explicit Node.js version for reproducibility.

Added HEALTHCHECK for container monitoring.

[github-actions]

This pull request has been open for more than 60 days without any activity. It will be closed in 3 days unless the stale label is removed or commented on.

[github-actions]

Closed pull request due to inactivity for more than 63 days.