How can I use cli Go files that belong to a web app?

My question is related to the structure or approach of Go applications. I have got the following application.

root
  |- app
  | |- services
  | |- repositories
  | |- handlers
  | |- commands
  |- go.mod
  |- main.go

The Go files in the commands package are working independently. The rest of the packages are working for a web application. I start an HTTP web server in the main.go

So, I'd like to run the Go files in the commands packages in the crontab. But as I know, I'll build these whole packages into a single binary file. My question is how can I run the Go files in the commands packages independently in the crontab? I think I should separate them into 2 applications such as "web app" and "command app" but actually they are related to each other and I don't want to manage 2 apps differently. May I use commands Go files in the crontab and on the other hand start an HTTP web server in the main.go?

There's no reason why you can't import packages from your web application module into another one, but if you want to keep them together, you can just do what is quite common, and add additional main packages in specific directories, giving a directory structure like this:

root
  |- app
  |  |-services
  |  |-...
  |- cmd
  |   |- tools
  |   |   |- main.go
  |- main.go

You can build/install your CLI binary simply by running go build ./cmd/tools or go install ./cmd/tools