Failed to set up Gramps Web on own server (beginner)

I am absolutely new to servers, followed the minimal wiki here. I have successfully set up Docker.desktop on my machine. I could run it and was able to pull the Gramps image using the default docker-compose.yml in a custom directory. Docker pulled the necessary data and ended up with three processes running. It looks ok:

PS D:\zac\Gramps Web> docker compose up -d
[+] Running 3/3
✔ Container grampsweb_redis Running 0.0s
✔ Container grampsweb-grampsweb-1 Running 0.0s
✔ Container grampsweb_celery Running 0.0s

Yet the first-run wizard has not appeared and I could not define neither user nor tree. I have no idea how to advance from here. How should I provide my Gramps data? Where should I put what tree file? Should I simply copy an exported .gpkg file to where I put the .yaml file? For the moment, I only want to use Gramps Web it locally.

(Windows 11 Pro, Docker version 29.1.3, build f52814d)

The first-run wizard should be at http://localhost:80 with this compose file. If it isn’t, please post the output of `docker ps`.

How should I provide my Gramps data?

That helped, thank you David!

Regarding syncing, can it be ensured that sync happens only one way (from desktop to web, but never the other way)?

Minor issue: Docker won’t import an XML file unless it is explicitly named something.gramps. When it is named something.xml (with the same plaintext contents), it complains about the format not being valid. I guess that it assumes format based on extension without peeking into it, but then why not assume in case of .xml?

Yes, the sync addon has a “sync mode” selector.

Minor issue: Docker won’t import an XML file unless it is explicitly named something.gramps. When it is named something.xml (with the same plaintext contents), it complains about the format not being valid. I guess that it assumes format based on extension without peeking into it, but then why not assume in case of .xml?

Short non-answer: that’s the way the Gramps library handles it, which is used underneath.