Caddy Local Authority - ECC Intermediate error: digital signature not valid. Is my machine?

Question

I'm using caddy version 2.5.2 inside a docker container. As soon as I open https://localhost I get the error about Caddy local authority - ECC Intermediate - Digital signature not valid:

My Caddy configuration is pretty simple - nothing special here:

{
    {$DEBUG}
}

{$SERVER_NAME}

log

route {
    root * /srv/app/public
    encode gzip
    php_fastcgi unix//var/run/php/php-fpm.sock
    file_server
}

I suspect is something to do with my machine.