If you want to develop with dawarich you can use the devcontainer, with your IDE. It is tested with visual studio code.
Load the directory in Vs-Code and press F1. And Run the command: Dev Containers: Rebuild Containers
after a while you should see a terminal.
Now you can create/prepare the Database (this need to be done once):
bundle exec rails db:prepare
Afterwards you can run sidekiq:
bundle exec sidekiq
And in a second terminal the dawarich-app:
bundle exec bin/dev
You can connect with a web browser to http://127.0.0.l:3000/ and login with the default credentials.