Add production deployment scripts and CD pipeline

[Nathydre]

Problem

No production deployment pipeline exists. The CI pipeline runs tests but doesn't deploy to any environment.

Acceptance Criteria

• Create Dockerfile for backend, frontend, and contract services
• Set up Docker Compose for production
• Add CD pipeline for staging and production deployment
• Implement blue-green or rolling deployment strategy
• Add deployment rollback mechanism
• Set up environment-specific configuration (testnet/mainnet)
• Add deployment notifications

[favvy0217]

good day maintainer,i would like to work on this issue

[grantfox-oss]

🦊 GrantFox — @favvy0217 has been assigned to this issue as part of the Third Campaign campaign!

Next steps:

1. Open a Pull Request referencing this issue (e.g., Closes #469)
2. Your PR will be reviewed by the nathydre21 maintainers

Good luck! Track your progress on GrantFox.

[grantfox-oss]

🎉 This issue has been marked as completed on GrantFox as part of the Third Campaign campaign!

@favvy0217's PR #486 was approved and merged by @Nathydre.

🏆 @favvy0217: You earned 35 FoxPoints for this contribution! Your current tier: Explorer (672 total points). Track your full progress on GrantFox.

👏 Great work, @favvy0217! Keep contributing to nathydre21.