FEATURE: default value for `-config`

[shish]

What version of nebula are you using?

master

What operating system are you using?

Mac

Describe the Bug

I want to email my friend a zip file with nebula.exe + config.yml + certs, and tell them "double-click nebula.exe to connect to my network"

service.go already contains code for "if config isn't specified, check to see if there's a config file next to the binary":

nebula/cmd/nebula-service/service.go

Lines 53 to 59 in 4453964

	if *configPath == "" {
	ex, err := os.Executable()
	if err != nil {
	panic(err)
	}
	*configPath = filepath.Dir(ex) + "/config.yaml"
	}

Could this code be used in the other places, so we default to "check the current folder" instead of "exit with an error"?

Now that I write this out, I realise that I could also include a .bat file in the .zip which just runs ./nebula.exe -config config.yml, but I feel like "check the current folder" would be nicer, and service.go is doing that already, so really we'd just be making it consistent :)

Logs from affected hosts

No response

Config files from affected hosts

No response

[jasikpark]

I'd opt for the wrapper script, I'm not sure that nebula should just look in the local directory for the config