add cors check and update docker file

internal/middleware/cors.go

@@ -5,7 +5,7 @@ import (
 )
 
 func CORS() gin.HandlerFunc {
-	return gin.HandlerFunc(func(c *gin.Context) {
+	return func(c *gin.Context) {
 		c.Header("Access-Control-Allow-Origin", "*")
 		c.Header("Access-Control-Allow-Credentials", "true")
 		c.Header("Access-Control-Allow-Headers", "Content-Type, Content-Length, Accept-Encoding, X-CSRF-Token, Authorization, accept, origin, Cache-Control, X-Requested-With")
@@ -17,5 +17,5 @@ func CORS() gin.HandlerFunc {
 		}
 
 		c.Next()
-	})
+	}
 }

internal/router/router.go

@@ -101,11 +101,11 @@ func (r *Router) Init() *gin.Engine {
 	engine := gin.New()
 	engine.Use(
 		middleware.JsonAPI(),
+		middleware.CORS(),
 		middleware.CorrelationID(),
 		middleware.Recover(),
 		middleware.HTTPStatLogger(),
 		middleware.PopulateContext(),
-		middleware.CORS(),
 	)
 
 	r.addAppRoutes(engine)