Onlyoffice doesn't have a valid cert on CI installations

Onlyoffice doesn't have a proper cert on CI installations. Cypress doesn't care, but when you try manually, OO won't open unless you check Disable certificate verification (unsecure). I.e. the main pipeline's CI domains are:

❯ kc -n nc get ingress
NAME                           CLASS    HOSTS                            ADDRESS         PORTS     AGE
nc-onlyoffice-documentserver   <none>   office-nc.gitlab.stackspin.net   213.108.110.6   80, 443   6h12m
nc-nextcloud                   <none>   files-nc.gitlab.stackspin.net    213.108.110.6   80, 443   6h12m

❯ kc -n nc get certs  
NAME            READY   SECRET          AGE
files-cert-nc   True    files-cert-nc   6h12m
To upload designs, you'll need to enable LFS and have an admin enable hashed storage. More information