chore: add docker hub instructions

README.md

@@ -15,6 +15,14 @@ docker run -it --rm -p 8080:8080 -v $PWD/data:/app/data w33ble/youtube-dl-web
 
 Then hit `http://localhost:8080`, passing in a `url` and optionally a `format` query parameter for where to download from.
 
+## Deploy to Docker Hub
+
+```sh
+docker build . -t youtube-dl
+docker tag youtube-dl USERNAME/youtube-dl:latest
+docker push USERNAME/youtube-dl:latest
+```
+
 ## License
 
 MIT © [w33ble](https://github.com/w33ble)