For a container with phpMyAdmin, you need to add a variable with an absolute path:
PMA_ABSOLUTE_URI: "https://artem.services/phpmyadmin"
The "location" block for Nginx (change the proxy path to yours):
location ~ \/phpmyadmin {
rewrite ^/phpmyadmin(/.*)$ $1 break;
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header X-Forwarded-For $remote_addr;
proxy_set_header Host $host;
proxy_pass http://localhost:8080;
}
Now phpMyAdmin will be available along the path:
https://artem.services/phpmyadmin/