I also added HACS via this command inside of the docker:
```bash
docker exec -it homeassistant bash
```
Then executed
```bash
wget -O - https://get.hacs.xyz | bash -
```
To install HACS into the Homeassistant installation. Of course restart the docker container afterwards

Currently installed integration( Last Update 28.07.2024)
- Miele (Miele@Home)
- Fritz!Box (For 192.168.178.0/24 subnet)