多节点本地自动测试网构建

[prl26]

在clone irita后运行make build-linux错误,以下是报错信息:
nstalling statik...
go: go.mod file not found in current directory or any parent directory.
'go get' is no longer supported outside a module.
To build and install a command, use 'go install' with a version,
like 'go install example.com/cmd@latest'
For more information, see https://golang.org/doc/go-get-install-deprecation
or run 'go help get' or 'go help install'.
make: *** [contrib/devtools/Makefile:64: /home/GOPATH/bin/statik] Error 1