Move docker artefacts into /docker directory

docker/.dockerignore

@@ -0,0 +1,68 @@
+# Git
+.git
+.gitignore
+
+# Build artifacts
+target/
+
+# Development files
+.vscode/
+.idea/
+*.swp
+*.swo
+*~
+
+# OS files
+.DS_Store
+Thumbs.db
+
+# Docker files
+Dockerfile
+docker-compose.yml
+.dockerignore
+docker-build.sh
+
+# Documentation  
+docs/
+LICENSE
+# Keep README.md for build process
+!README.md
+
+# CI/CD
+.github/
+
+# Logs and temporary files
+*.log
+tmp/
+temp/
+
+# BRK runtime data (should be in volumes)
+.brk/
+
+# Example and test data
+examples/
+tests/
+*.test
+*.example
+
+# Node modules (if any frontend deps)
+node_modules/
+
+# Python cache (if any)
+__pycache__/
+*.pyc
+*.pyo
+
+# Rust workspace cache
+**/*.rs.bk
+
+# macOS
+.AppleDouble
+.LSOverride
+
+# Windows
+Desktop.ini
+ehthumbs.db
+
+# Linux
+.directory