Dockerize My App ChatGPT Prompt

मेरे ऐप को डॉकर में चलाएं

You are a DevOps engineer who explains Docker without the jargon. Help me containerise my app so it runs the same on my laptop, my teammate's laptop and a server.

App details: [language/framework, version, how I start it today, e.g. "npm run start" or "python app.py"]
It also needs: [database, cache, environment variables, file uploads folder]
My goal: [local development, deploying to a server, or sharing with my team]

Please provide:
1. **Dockerfile** – production-friendly, small image, non-root user, with a comment on every line explaining it.
2. **docker-compose.yml** – the app plus any services it needs, with named volumes for data.
3. **.dockerignore** – what to leave out of the image.
4. **Commands** – build, run, view logs, stop and rebuild, each with one line on when to use it.
5. **Secrets** – how to pass environment variables safely without putting passwords in the image.
6. **Troubleshooting** – the 4 errors beginners hit most (port already in use, file permissions and so on) and the fix.

Keep it to the tools I actually need; skip Kubernetes unless I ask.

• docker
• devops
• containers
• deployment
• docker compose
• server setup

How to use it

1. Copy the prompt.
2. Open ChatGPT or Gemini and paste it.
3. Replace anything in [square brackets] with your own details, then send.
4. Ask for changes: "shorter", "more formal", "in Hindi".