Fn CLI

```sh
# MacOS
brew update && brew install fn

# Linux/Unix/MacOS
curl -LSs https://raw.githubusercontent.com/fnproject/cli/master/install | sh
```

```sh
# 初始化一个 Go 函数
fn init --runtime go hello

# 创建带有预置并发的函数
fn create function <app-name> <function-name> <image> --provisioned-concurrency constant:40

# 监控本地目录并自动部署
fn watch --app <app>
```