fix(server): gorm logging

- add support for LOG_LEVEL env var (Resolves #271)

server/db/providers/sql/provider.go

@@ -2,14 +2,13 @@ package sql
 
 import (
 	"fmt"
-	"log"
-	"os"
 	"time"
 
 	"github.com/authorizerdev/authorizer/server/constants"
 	"github.com/authorizerdev/authorizer/server/db/models"
 	"github.com/authorizerdev/authorizer/server/memorystore"
 	"github.com/glebarez/sqlite"
+	"github.com/sirupsen/logrus"
 	"gorm.io/driver/mysql"
 	"gorm.io/driver/postgres"
 	"gorm.io/driver/sqlserver"
@@ -37,12 +36,12 @@ func NewProvider() (*provider, error) {
 	var sqlDB *gorm.DB
 	var err error
 	customLogger := logger.New(
-		log.New(os.Stdout, "\r\n", log.LstdFlags), // io writer
+		logrus.StandardLogger(),
 		logger.Config{
-			SlowThreshold:             time.Second,   // Slow SQL threshold
-			LogLevel:                  logger.Silent, // Log level
-			IgnoreRecordNotFoundError: true,          // Ignore ErrRecordNotFound error for logger
-			Colorful:                  false,         // Disable color
+			SlowThreshold:             time.Second,  // Slow SQL threshold
+			LogLevel:                  logger.Error, // Log level
+			IgnoreRecordNotFoundError: true,         // Ignore ErrRecordNotFound error for logger
+			Colorful:                  false,        // Disable color
 		},
 	)