docs: add deploy to Koyeb button

Dockerfile

@@ -17,7 +17,7 @@ RUN pnpm i
 # ENTRYPOINT ["pnpm", "run", "run-all"]
 
 # only for prod
-RUN pnpm run build
+RUN GITHUB_REPOSITORY=zardoy/minecraft-web-client pnpm run build
 
 # ---- Run Stage ----
 FROM node:18-alpine

README.MD

@@ -38,11 +38,13 @@ Whatever offline mode you used (zip, folder, just single player), you can always
 
 ![docs-assets/singleplayer-future-city-1-10-2.jpg](./docs-assets/singleplayer-future-city-1-10-2.jpg)
 
-### Servers
+### Servers & Proxy
 
 You can play almost on any Java server, vanilla servers are fully supported.
 See the [Mineflayer](https://github.com/PrismarineJS/mineflayer) repo for the list of supported versions (should support majority of versions).
-There is a builtin proxy, but you can also host your one! Just clone the repo, run `pnpm i` (following CONTRIBUTING.MD) and run `pnpm prod-start`, then you can specify `http://localhost:8080` in the proxy field.
+There is a builtin proxy, but you can also host your one! Just clone the repo, run `pnpm i` (following CONTRIBUTING.MD) and run `pnpm prod-start`, then you can specify `http://localhost:8080` in the proxy field. Or you can deploy it to the cloud service:
+
+[![Deploy to Koyeb](https://www.koyeb.com/static/images/deploy/button.svg)](https://app.koyeb.com/deploy?name=minecraft-web-client&type=git&repository=zardoy%2Fminecraft-web-client&branch=next&builder=dockerfile&env%5B%5D=&ports=8080%3Bhttp%3B%2F)
 
 Proxy servers are used to connect to Minecraft servers which use TCP protocol. When you connect connect to a server with a proxy, websocket connection is created between you (browser client) and the proxy server located in Europe, then the proxy connects to the Minecraft server and sends the data to the client (you) without any packet deserialization to avoid any additional delays. That said all the Minecraft protocol packets are processed by the client, right in your browser.
 

scripts/dockerPrepare.mjs

@@ -2,6 +2,11 @@
 import fs from 'fs'
 import path from 'path'
 import { fileURLToPath } from 'url'
+import { execSync } from 'child_process'
+
+// write release tag
+const commitShort = execSync('git rev-parse --short HEAD').toString().trim()
+fs.writeFileSync('./assets/release.json', JSON.stringify({ latestTag: `${commitShort} (docker)` }), 'utf8')
 
 const packageJson = JSON.parse(fs.readFileSync('./package.json', 'utf8'))
 delete packageJson.optionalDependencies