✨: build: support PROXY_URL in docker

[arvinxx]

💻 变更类型 | Change Type

• ✨ feat
• 🐛 fix
• ♻️ refactor
• 💄 style
• 🔨 chore
• ⚡️ perf
• 📝 docs

🔀 变更说明 | Description of Change

• close [Request] 能否在请求OpenAI时添加HttpsProxyAgent #2004
• close [Request] 网络访问使用代理服务器的问题 #1936
• close [Bug] 使用docker部署后无法访问助手市场和插件商店 #1990
• close [Request] Support for http_proxy inside #1613
• close [Bug] 根据教程设置子目录路径 ENV NEXT_PUBLIC_BASE_PATH，重新构建生成docker镜像运行不成功。 #1303
• close 能否提供PROXY_URL 配置 #985

📝 补充信息 | Additional Information

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1 Ignored Deployment

Name	Status	Preview	Comments	Updated (UTC)
lobe-chat-community	⬜️ Ignored (Inspect)	Visit Preview		May 6, 2024 11:13am

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 92.96%. Comparing base (4f98e6c) to head (cedd130).
Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff            @@
##             main    #2382    +/-   ##
========================================
  Coverage   92.96%   92.96%            
========================================
  Files         301      301            
  Lines       17393    17393            
  Branches     1256     2009   +753     
========================================
  Hits        16170    16170            
  Misses       1223     1223            

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