fix: sshPkg.Fatal has more nuance

See #507

cli/server/add.go

@@ -103,8 +103,7 @@ developer machine. The domain is then set to "default".`,
 
 		if _, err := client.New(name, timeout); err != nil {
 			cleanUp(name)
-			log.Debugf("ssh %s error: %s", name, sshPkg.Fatal(name, err))
-			log.Fatalf("can't ssh to %s, make sure \"ssh %s\" works", name, name)
+			log.Fatalf("ssh %s error: %s", name, sshPkg.Fatal(name, err))
 		}
 
 		if created {

pkg/ssh/ssh.go

@@ -20,6 +20,8 @@ func Fatal(hostname string, err error) error {
 		return fmt.Errorf("ssh auth: permission denied for %s", hostname)
 	} else if strings.Contains(out, "Network is unreachable") {
 		return fmt.Errorf("unable to connect to %s, please check your SSH config", hostname)
+	} else if strings.Contains(out, "Is the docker daemon running") {
+		return fmt.Errorf("docker: is the daemon running / your user has docker permissions?")
 	}
 
 	return err