optimize some code

main.go

@@ -292,7 +292,7 @@ case "$1" in
         fi
     ;;
     *)
-		$0 start
+        $0 start
     ;;
 esac
 exit 0

util/docker_util.go

@@ -8,8 +8,5 @@ const DockerEnvFile string = "/.dockerenv"
 // IsRunInDocker 是否在docker中运行
 func IsRunInDocker() bool {
 	_, err := os.Stat(DockerEnvFile)
-	if err != nil {
-		return false
-	}
-	return true
+	return err == nil
 }

util/http_util.go

@@ -42,7 +42,7 @@ func GetHTTPResponseOrg(resp *http.Response, url string, err error) ([]byte, err
 	// 300及以上状态码都算异常
 	if resp.StatusCode >= 300 {
 		errMsg := fmt.Sprintf("请求接口 %s 失败! 返回内容: %s ,返回状态码: %d\n", url, string(body), resp.StatusCode)
-		log.Printf(errMsg)
+		log.Println(errMsg)
 		err = fmt.Errorf(errMsg)
 	}