minor improvements

Author: tbocek

Makefile

@@ -9,7 +9,7 @@ all: dep build test
 test:
 	go test ./... -v
 build:
-	go build -o fastauth
+	go build -o $(NAME)
 dep: go.mod
 	go mod tidy
 	go get -v -u ./...

fastauth.go

@@ -110,6 +110,12 @@ func NewOpts() *Opts {
 	flag.BoolVar(&opts.LdapServer, "ldap-server", LookupEnv("LDAP_SERVER") != "", "Enable ldap server. In dev mode these are enabled by default")
 	flag.BoolVar(&opts.DetailedError, "details", LookupEnv("DETAILS") != "", "Enable detailed errors")
 	flag.BoolVar(&opts.Limiter, "limiter", LookupEnv("LIMITER") != "", "Enable limiter, disabled in dev mode")
+
+	flag.Usage = func() {
+		fmt.Fprintf(flag.CommandLine.Output(), "Usage of %s:\n", os.Args[0])
+		flag.PrintDefaults()
+	}
+
 	flag.Parse()
 	return opts
 }