Add Docker setup for containerized deployment

- Dockerfile with nginx:alpine for minimal image size
- docker-compose.yml with container name "mischlabs" on port 8085
- nginx.conf with static asset caching and security headers
- Updated Brain.md with deployment documentation

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

.gitignore

@@ -4,3 +4,4 @@ Thumbs.db
 *.swo
 *~
 .vscode/
+.claude/