feat: add config and structured logging

internal/os/osinfo.go

@@ -2,7 +2,8 @@ package os
 
 import (
 	"fmt"
-	"log"
+	"jws/internal/logger"
+	"log/slog"
 	"os"
 	"os/exec"
 	"strings"
@@ -15,6 +16,12 @@ type OS struct {
 	PackageManager string
 }
 
+var log *slog.Logger
+
+func init() {
+	log = logger.GetChildLogger("os")
+}
+
 func GetLinuxDistribution() (*OS, error) {
 	_, err := os.Stat("/etc/os-release")
 	if os.IsNotExist(err) {
@@ -49,7 +56,8 @@ func parseOsRelease(osRelease string) *OS {
 	}
 	err := result.getPackageManager()
 	if err != nil {
-		log.Fatal(err)
+		log.Error(err.Error())
+		os.Exit(1)
 	}
 	return &result
 }