Signup error on Docker #23

I tried the docker container, and got a 500 error when I tried to open the signup URL, the logfiles give these errors, which seem to be the root cause:

172.18.0.1 - - [30/May/2026:13:41:49 +0000] "GET /signup/ HTTP/1.1" 302 272 "-" "Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:150.0) Gecko/20100101 Firefox/150.0"
[Sat May 30 13:41:49.840820 2026] [php:notice] [pid 24:tid 24] [client 172.18.0.1:36156] SQLSTATE[42P01]: Undefined table: 7 ERROR: relation "dshb_operators" does not exist\nLINE 9: dshb_operators\n ^ [/var/www/html/libs/bcosca/fatfree-core/db/sql.php:230]
[Sat May 30 13:41:49.840845 2026] [php:notice] [pid 24:tid 24] [client 172.18.0.1:36156] [libs/bcosca/fatfree-core/db/sql.php:230] PDOStatement->execute()
[Sat May 30 13:41:49.840850 2026] [php:notice] [pid 24:tid 24] [client 172.18.0.1:36156] [app/Models/BaseSql.php:61] DB\SQL->exec()
[Sat May 30 13:41:49.840853 2026] [php:notice] [pid 24:tid 24] [client 172.18.0.1:36156] [app/Models/Operator.php:357] Tirreno\Models\BaseSql->execQuery()
[Sat May 30 13:41:49.840856 2026] [php:notice] [pid 24:tid 24] [client 172.18.0.1:36156] [app/Controllers/Pages/Signup.php:25] Tirreno\Models\Operator->getAll()
[Sat May 30 13:41:49.840859 2026] [php:notice] [pid 24:tid 24] [client 172.18.0.1:36156] [app/Controllers/Navigation.php:42] Tirreno\Controllers\Pages\Signup->getPageParams()
[Sat May 30 13:41:49.840862 2026] [php:notice] [pid 24:tid 24] [client 172.18.0.1:36156] [index.php:102] Base->run()