archinstall/deployments/default.json

{
    "args" : {
        "password" : "<STDIN>",
        "post" : "stay"
    },
    "post" : {
    	"test exit codes" : {
    		"exit 1" : {"ignore_errors" : true},
    		"echo 'test1'; read moo; echo 'test2'; read mooo" : {"events" : {
    			"test1" : "something",
    			"test2" : "something"
    		}, "boot" : true}
    	}
    }
}