增加dockerfile配置

config/config.go

@@ -0,0 +1,16 @@
+package config
+
+import (
+	"fmt"
+
+	"github.com/gogf/gf/v2/frame/g"
+	"github.com/gogf/gf/v2/os/gcfg"
+	"github.com/gogf/gf/v2/os/genv"
+)
+
+func init() {
+	env := genv.Get("APP_ENV", "").String()
+	if env != "" {
+		g.Cfg().GetAdapter().(*gcfg.AdapterFile).SetFileName(fmt.Sprintf("config-%s.yml", env))
+	}
+}