references to Heroku and Papertrail docs added

README.md

@@ -39,22 +39,26 @@ docker compose logs -f
 Assuming that the app `my-heroku-app` is created on Heroku platform and Heroku CLI is installed on the local machine, the next steps can be executed to release the app:
 
 ```
-heroku login
 heroku container:login
 docker login --username=_ --password=$(heroku auth:token) registry.heroku.com
 docker tag ghcr.io/zkbob/bob-circulating-supply:main registry.heroku.com/my-heroku-app/web:latest
 docker push registry.heroku.com/my-heroku-app/web:latest
 heroku container:release -a my-heroku-app web
 ```
 
+More info about the docker container deployment to Heroku can be found [here](https://devcenter.heroku.com/articles/container-registry-and-runtime#logging-in-to-the-registry).
+
 An extra step can be done if you have a [papertrail](https://papertrailapp.com/) account configured and would like to forward logs from the Heroku app to the remote logs storage:
 
 ```
+heroku login
 heroku drains:add syslog+tls://logsXXX.papertrailapp.com:YYYY -a my-heroku-app
 ```
 
 Is it possible to see configured drains for the app by:
 
 ```
 heroku drains --app my-heroku-app
-```
+```
+
+For more info refer to [the Papertrail documentation](https://www.papertrail.com/help/heroku/).