Function Calls from the CLI

The simplest and most common way to call Dagger Functions is to use the Dagger CLI. The Dagger CLI is a full-featured, easy to use tool that can be used interactively from a terminal or non-interactively from a shell script or a CI configuration.

Here is an example of calling a Dagger Function using the Dagger CLI:

dagger -m github.com/shykes/daggerverse/hello@v0.1.2 call hello

Here's what you should see:

hello, world!

In this example, the Dagger CLI is first loading a hello module directly from its GitHub repository and then executing the Hello() function from that module.

If you inspect the source code of the module, you'll see a Hello() function, written in Go, which prepares a message and returns it as a string.