fix: fmt

Signed-off-by: QuentinN42 <quentin@lieumont.fr>

Author: QuentinN42

pkg/locations/dns/resolvers_unix.go

@@ -3,6 +3,7 @@
 package dns
 
 import (
+	"fmt"
 	"net"
 
 	"github.com/miekg/dns"
@@ -13,7 +14,7 @@ import (
 func systemResolvers() ([]string, error) {
 	config, err := dns.ClientConfigFromFile("/etc/resolv.conf")
 	if err != nil {
-		return nil, err
+		return nil, fmt.Errorf("failed to read /etc/resolv.conf: %w", err)
 	}
 	port := config.Port
 	if port == "" {

pkg/locations/dns/serve.go

@@ -1,6 +1,10 @@
 package dns
 
-import "github.com/miekg/dns"
+import (
+	"fmt"
+
+	"github.com/miekg/dns"
+)
 
 // serve runs a TCP DNS server bound to addr until it stops. It blocks and
 // returns the error that caused ListenAndServe to exit.
@@ -10,5 +14,9 @@ func serve(addr string, handler dns.Handler) error {
 		Net:     "tcp",
 		Handler: handler,
 	}
-	return server.ListenAndServe()
+	err := server.ListenAndServe()
+	if err != nil {
+		return fmt.Errorf("failed to listen and serve DNS server: %w", err)
+	}
+	return nil
 }