feat: enhance logging configuration to use dynamic log level from environment variable

internal/app/config/main.go

@@ -2,6 +2,7 @@ package config
 
 import (
 	"os"
+	"strings"
 
 	"github.com/joho/godotenv"
 	log "github.com/sirupsen/logrus"
@@ -10,6 +11,7 @@ import (
 type appConfig struct {
 	SourceDbUrl string
 	TargetDbUrl string
+	LogLevel    string
 }
 
 func loadEnv() {
@@ -32,9 +34,15 @@ func getAppConfig() appConfig {
 		log.Fatal("TARGET_DB_URL environment variable not set")
 	}
 
+	logLevel := strings.ToUpper(os.Getenv("LOG_LEVEL"))
+	if logLevel == "" {
+		logLevel = "INFO"
+	}
+
 	return appConfig{
 		SourceDbUrl: sourceDbUrl,
 		TargetDbUrl: targetDbUrl,
+		LogLevel:    logLevel,
 	}
 }