Update README.md

Author: finnBsch

README.md

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     <a href="https://www.finnbusch.com/OneMap/">Project Website</a> , <a href="https://arxiv.org/pdf/2409.11764">Paper (arXiv)</a>
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+[![Docker Build](https://github.com/KTH-RPL/OneMap/actions/workflows/docker-build.yml/badge.svg)](https://github.com/KTH-RPL/OneMap/actions/workflows/docker-build.yml)
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 This repository contains the code for the paper "One Map to Find Them All: Real-time Open-Vocabulary Mapping for
 Zero-shot Multi-Object Navigation". We provide a [dockerized environment](#setup-docker) to run the code or