v1.5.0: Domain Alias Support

🎯 Domain Alias Support

This release implements domain alias support for DNS challenges, a highly requested feature (#39) that enables advanced DNS validation scenarios.

✨ What's New

Domain Alias for DNS Challenges

• Specify an alternative domain for DNS validation records
• Certificate for example.com with DNS validation on _acme-challenge.validation.example.org
• Fully optional and backward compatible

🚀 Use Cases

1. Centralized DNS Validation

   • Manage all ACME DNS challenges on a single validation domain
   • Simplify DNS infrastructure and reduce API token sprawl

2. DNS API Limitations

   • Primary domain doesn't support DNS API
   • Work around DNS provider restrictions

3. Enterprise Architecture

   • Separate validation infrastructure from production DNS
   • Enhanced security through DNS isolation

📖 Usage Example

# API Request
POST /api/certificates/create
Authorization: Bearer your_token_here
Content-Type: application/json

{
  "domain": "example.com",
  "dns_provider": "cloudflare",
  "domain_alias": "_acme-challenge.validation.example.org"
}

This creates a certificate for example.com but performs DNS validation on _acme-challenge.validation.example.org.

🔧 Technical Details

Changes:

• Added optional domain_alias parameter to certificate creation API
• Updated all 15+ DNS provider strategies to support domain alias
• Passes --domain-alias flag to Certbot when specified

Testing:

• 5 new comprehensive tests for domain alias functionality
• All 32 tests passing (27 existing + 5 new)
• Validates backward compatibility

Files Modified:

• modules/core/dns_strategies.py - Domain alias support in all strategies
• modules/core/certificates.py - Pass domain_alias to DNS strategy
• modules/api/models.py - Added domain_alias field
• modules/api/resources.py - Extract and pass domain_alias
• test_domain_alias.py - New test suite
• README.md - Documentation and examples

✅ Quality Assurance

• ✅ All 32 tests passing
• ✅ Backward compatible - no breaking changes
• ✅ Works with all DNS providers
• ✅ Comprehensive documentation

🐛 Fixes

• Closes #39 - Domain alias DNS challenge support

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Full Changelog: v1.4.0...v1.5.0