Update README.md (#5238)

README.md

@@ -6,6 +6,9 @@ Dolphin Scheduler Official Website
 [![Total Lines](https://tokei.rs/b1/github/apache/Incubator-DolphinScheduler?category=lines)](https://github.com/apache/Incubator-DolphinScheduler)
 [![codecov](https://codecov.io/gh/apache/incubator-dolphinscheduler/branch/dev/graph/badge.svg)](https://codecov.io/gh/apache/incubator-dolphinscheduler/branch/dev)
 [![Quality Gate Status](https://sonarcloud.io/api/project_badges/measure?project=apache-dolphinscheduler&metric=alert_status)](https://sonarcloud.io/dashboard?id=apache-dolphinscheduler)
+[![Twitter Follow](https://img.shields.io/twitter/follow/dolphinschedule.svg?style=social&label=Follow)](https://twitter.com/dolphinschedule)
+[![Slack Status](https://img.shields.io/badge/slack-join_chat-white.svg?logo=slack&style=social)](https://join.slack.com/t/asf-dolphinscheduler/shared_invite/zt-omtdhuio-_JISsxYhiVsltmC5h38yfw)
+
 
 
 [![Stargazers over time](https://starchart.cc/apache/incubator-dolphinscheduler.svg)](https://starchart.cc/apache/incubator-dolphinscheduler)