FLUTTER_STORAGE_BASE_URL=https://mirrors.tuna.tsinghua.edu.cn/flutter
PUB_HOSTED_URL=https://mirrors.tuna.tsinghua.edu.cn/dart-pub

HTTP_PROXY=http://127.0.0.1:1080/
HTTPS_PROXY=http://127.0.0.1:1080/

# curl只支持小写
http_proxy=http://127.0.0.1:1080/
https_proxy=http://127.0.0.1:1080/