Add hint to open port in firewall [around here](https://github.com/helfertool/docs/blob/8ea311e519b37ca5e7dbeb464434bc602072050f/source/admin/installation.rst?plain=1#L68) would be helpful, e.g. ``` ufw allow in docker0 ufw allow out docker0 ``` or with specific port (5432)
Add hint to open port in firewall around here would be helpful, e.g.
or with specific port (5432)