Update README.md badges

Author: seanharrison

README.md

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 # Kruxia Flow Python SDK
 
+[![CI](https://github.com/kruxia/kruxiaflow/actions/workflows/main-ci.yml/badge.svg)](https://github.com/kruxia/kruxiaflow-python/actions/workflows/main-ci.yml)
+[![Docker Image](https://img.shields.io/docker/image-size/kruxia/kruxiaflow-py-std/latest?label=docker%20image)](https://hub.docker.com/r/kruxia/kruxiaflow-py-std)
 [![License: MIT](https://img.shields.io/badge/License-MIT-blue.svg)](https://opensource.org/licenses/MIT)
+[![Discord](https://img.shields.io/discord/1457098705214640333?logo=discord&label=Discord)](https://discord.gg/ZJAzygCq)
 [![Python](https://img.shields.io/badge/python-3.10+-blue.svg)](https://www.python.org/downloads/)
 
 Python SDK for [Kruxia Flow](https://github.com/kruxia/kruxiaflow) — the AI-native durable workflow engine.