fix: 修复umi dev SOCKET_SERVER启动环境变量不起作用#886

jeromehan wants to merge 1 commit intoumijs:masterumijs/plugins:masterfrom

jeromehan:feature/umi-process.env.SOCKET_SERVERjeromehan/plugins:feature/umi-process.env.SOCKET_SERVERCopy head branch name to clipboard