Fix: make Grafana optional and allow README in build

.dockerignore

@@ -0,0 +1,108 @@
+# Git and version control
+.git
+.gitignore
+.gitattributes
+
+# Python cache and build artifacts
+__pycache__/
+*.py[cod]
+*$py.class
+*.so
+.Python
+build/
+develop-eggs/
+dist/
+downloads/
+eggs/
+.eggs/
+lib/
+lib64/
+parts/
+sdist/
+var/
+wheels/
+share/python-wheels/
+*.egg-info/
+.installed.cfg
+*.egg
+MANIFEST
+
+# Virtual environments
+venv/
+env/
+ENV/
+env.bak/
+venv.bak/
+
+# IDE and editor files
+.vscode/
+.idea/
+*.swp
+*.swo
+*~
+.DS_Store
+
+# Testing and coverage
+.pytest_cache/
+.coverage
+htmlcov/
+.tox/
+.nox/
+coverage.xml
+*.cover
+*.py,cover
+.hypothesis/
+
+# Documentation
+docs/_build/
+.readthedocs.yml
+
+# Local development files
+.env
+.env.local
+.env.development
+.env.test
+.env.production
+
+# Logs
+*.log
+logs/
+
+# Database files (for local development)
+*.db
+*.sqlite
+*.sqlite3
+
+# Temporary files
+*.tmp
+*.temp
+.cache/
+
+# Node.js (if any frontend assets)
+node_modules/
+npm-debug.log*
+yarn-debug.log*
+yarn-error.log*
+
+# Docker files (avoid infinite recursion)
+Dockerfile*
+docker-compose*.yml
+.dockerignore
+
+# GitHub workflows (not needed in container)
+.github/
+
+# Local data directories
+data/
+backups/
+
+# Security and keys
+*.pem
+*.key
+secrets/
+
+# Misc
+LICENSE
+CHANGELOG.md
+CONTRIBUTING.md
+IMPLEMENTATION_PLAN.md