Hello, welcome back
You miss a git clone
before the URL, it would seem.
You should add the following:
- git clone https://github.com/discourse/discourse-reactions
For example, see the last line:
hooks:
after_code:
- exec:
cd: $home/plugins
cmd:
- git clone https://github.com/discourse/docker_manager.git
- git clone https://github.com/discourse/discourse-knowledge-explorer
- git clone https://github.com/discourse/discourse-reactions