Improved docker cmd
2. (Optional, you can also use SQLite) Get yourself a PostgreSQL DB running
```shell
- docker run --name headscale -e POSTGRES_DB=headscale -e \
- POSTGRES_USER=foo -e POSTGRES_PASSWORD=bar -p 5432:5432 -d postgres
+ docker run --name headscale \
+ -e POSTGRES_DB=headscale
+ -e POSTGRES_USER=foo \
+ -e POSTGRES_PASSWORD=bar \
+ -p 5432:5432 \
+ -d postgres
```
3. Create a WireGuard private key and headscale configuration
