Hello everyone,
is there any manual on how to remove discourse-sitemap? Thanks, or if someone can help me I would be very grateful.
I get this message in the control panel
Hiya! 
That is installed as a plugin. If you see the guide for installing plugins at Install plugins on a self-hosted site, the way to remove the plugin will be to edit your app.yml and remove the line with the discourse-sitemap plugin. 
You have to log into your server and edit the file, which is located by default in /var/discourse/containers/app.yml
Any text editor will do.
Near the end of the file contents, you should see this line:
- git clone https://github.com/discourse/discourse-sitemap
Delete this line, and rebuild from the command line (./launcher rebuild app), or update your forum through the interface.
edit: oh, 1 minute late!
It’s okay! It’s best to have multiple approaches to a solution, and this way I don’t have to type them all out!
Both advices use
cd /var/discourse
./launcher rebuild app
However, this runs for a few minutes, then fails with
docker: Error response from daemon: driver failed programming external connectivity on endpoint app (a472c81b9b5....): Bind for 0.0.0.0:443 failed: port is already allocated.
I don’t see any effect on my forum site. What am I missing? For updates that need a the docker containers to be updates, I found that instead of launcher rebuild app I have to run
cd /var/discourse/
./launcher stop web_only && ./launcher rebuild data && ./launcher rebuild web_only
But this does not resolve the deprecated discourse-sitemap.
Welcome Kjell!
Sorry for moving the post back and forth, I misread your problem.
You should remove the line from web_only.yml in that case, not from app.yml.