feat: Update Docker configuration and enhance AutoUrlManager with copy functionality for example format

.dockerignore

@@ -1,69 +1,35 @@
-# Dependencies
-node_modules
-npm-debug.log*
-yarn-debug.log*
-yarn-error.log*
-
-# Production builds
-frontend/dist
-frontend/build
-
-# Environment files
-.env
-.env.local
-.env.development.local
-.env.test.local
-.env.production.local
-
-# IDE files
-.vscode
-.idea
-*.swp
-*.swo
-
-# OS files
-.DS_Store
-Thumbs.db
-
-# Git
+# VCS
 .git
+.gitattributes
 .gitignore
 
-# Documentation
-README.md
-CHANGELOG.md
-DOCKER.md
+# CI config (excluded from build context)
+.gitea/
 
-# CI/CD
-.gitea
+# Node modules
+node_modules/
+frontend/node_modules/
+backend/node_modules/
+
+# IDE/OS
+.vscode/
+.idea/
+.DS_Store
 
 # Logs
-logs
 *.log
 
-# Runtime data
-pids
-*.pid
-*.seed
-*.pid.lock
+# Frontend build output
+frontend/dist/
 
-# Coverage directory used by tools like istanbul
-coverage
+# Large example data not needed for image build
+example/
+example-servers*.json
 
-# nyc test coverage
-.nyc_output
-
-# Dependency directories
-jspm_packages/
-
-# Optional npm cache directory
-.npm
-
-# Optional REPL history
-.node_repl_history
-
-# Output of 'npm pack'
-*.tgz
-
-# Yarn Integrity file
-.yarn-integrity 
+# Misc docs
+Dockerfile*
+README.md
+CHANGELOG.md
+CI_TROUBLESHOOTING.md
+DOCKER.md
+SHX_NETWORK.md