Initial commit: Clean Mold Cost Calculator application

- Flask-based mold cost calculation application
- PostgreSQL database with SQLAlchemy ORM
- Docker/Podman containerization
- Comprehensive documentation in docs/
- Clean, organized codebase without obsolete files
- Production-ready deployment configuration
- Enhanced pytest configuration with coverage reporting
- Master/Development branch structure

.dockerignore

@@ -0,0 +1,39 @@
+# Git
+.git
+.gitignore
+
+# Logs
+logs/
+
+# Instance
+instance/
+
+# Temporary files
+*.pyc
+__pycache__/
+*.pyo
+*.pyd
+.Python
+.DS_Store
+
+# Virtual environment
+.venv/
+
+# Docker
+Dockerfile
+docker-compose.yml
+mold_cost_tool.tar
+
+# Documentation
+README.md
+DEPLOYMENT.md
+App_Function_Design.md
+
+# Tests
+tests/
+
+# Scripts
+scripts/
+
+# Other
+.DS_Store