docs: add build status badge in readme

README.md

@@ -3,7 +3,7 @@
 📢 Note: This project was known as Bitwarden_RS and has been renamed to separate itself from the official Bitwarden server in the hopes of avoiding confusion and trademark/branding issues. Please see [#1642](https://github.com/dani-garcia/vaultwarden/discussions/1642) for more explanation.
 
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+[![Build](https://github.com/dani-garcia/vaultwarden/actions/workflows/build.yml/badge.svg)](https://github.com/dani-garcia/vaultwarden/actions/workflows/build.yml)
 [![Docker Pulls](https://img.shields.io/docker/pulls/vaultwarden/server.svg)](https://hub.docker.com/r/vaultwarden/server)
 [![Dependency Status](https://deps.rs/repo/github/dani-garcia/vaultwarden/status.svg)](https://deps.rs/repo/github/dani-garcia/vaultwarden)
 [![GitHub Release](https://img.shields.io/github/release/dani-garcia/vaultwarden.svg)](https://github.com/dani-garcia/vaultwarden/releases/latest)