I have installed Ghost with docker-compose, and I have provided local translations for the theme – which works. But I don’t see how to provide local translations for the portal. I don’t mind the portal being in English, but once I switch the language to ‘sq’ it tries to translate the portal as well, and the current translations are broken.
Is it possible to provide local translations for the portal?
With a docker-compose installation this might be a bit more difficult, I guess.
The preferred way might be to contribute fixes to the translations. 
But to answer your question: you’d need to build a custom version of portal containing your translations.
I have done it already, but it is not clear how long it could take for the PR to be accepted, and then to become available on the docker images.
Anyway, translations are a bit subjective, somebody may not like some of my translations, and I may not like the translations of someone else. Being able to override some of the translations locally (if possible) is always welcome.
It is not obvious to me how. Will I have to build my own docker images? I can do this, if someone shows me how to do it.
Thanks for your answer.
I forgot to include the link to the PR: Albanian translations by dashohoxha · Pull Request #27839 · TryGhost/Ghost · GitHub
The portal app is in the Ghost monorepo but can be built separately, and then you’d pass in its url as a docker variable. Or you could build the whole Ghost docker image.
To build Portal: Clone the Ghost repo, then Ghost/apps/portal/README.md at main · TryGhost/Ghost · GitHub
Thanks, I will give it a try.