Correction in the sample config file
Added the db_type in the sample config.yaml  Without this entry, the container throws Unsupported DB error
`db_type: sqlite3`
@@ -58,6 +58,7 @@ private_key_path: /etc/headscale/private.key
noise:
private_key_path: /etc/headscale/noise_private.key
# The default /var/lib/headscale path is not writable in the container
+db_type: sqlite3
db_path: /etc/headscale/db.sqlite
```
