Скачать или смотреть [workaround] What happens if Odoo.sh does not detect your addons?

Normally Odoo apps can be installed to Odoo.sh hosting platform by committing them to server repository in Github. But what happens if add-on commitments are not detected by Odoo.sh platform? Here is a description of the problem and a workaround how to get it working for now.

TL;DR workaround:
1. Drag the instance to Main branch
2. Install one standard app
3. Go to github and commit add-ons. Wait for rebuild
4. Drag instance from main branch to dev. Wait for rebuild (note: this will nuke the database)
5. Drag to the instance from dev to main branch and wait for rebuild
6. Install one standard Odoo application
7. Enable dev mode, go to apps, update apps list
8. Observe how added add-ons are visible in the apps list

TL;DR Steps to reproduce
1. Clone Odoo server's github repo
2. Add any addon
3. Git commit and git push
4. Observe odoo.sh rebuilding
5. Settings - Dev mode - Apps - Update apps list - Look for added add-on and be amazed that it is not present