chore(frontend): add .dockerignore file to exclude unnecessary files from Docker context

frontend/.dockerignore

@@ -0,0 +1,61 @@
+# Dependencies
+node_modules
+npm-debug.log*
+yarn-debug.log*
+yarn-error.log*
+pnpm-debug.log*
+
+# Production builds
+.next/
+out/
+dist/
+
+# Environment variables
+.env
+.env.local
+.env.development.local
+.env.test.local
+.env.production.local
+
+# Runtime data
+pids
+*.pid
+*.seed
+*.pid.lock
+
+# Logs
+logs
+*.log
+
+# Temporary files
+.DS_Store
+.DS_Store?
+._*
+.Spotlight-V100
+.Trashes
+ehthumbs.db
+Thumbs.db
+
+# IDEs and editors
+.vscode/
+.idea/
+*.swp
+*.swo
+*~
+
+# Git
+.git
+.gitignore
+
+# Docker
+Dockerfile*
+docker-compose*
+.dockerignore
+
+# Testing
+coverage/
+.nyc_output
+.coverage
+
+# Other
+.cache/