[OSGeo] #3052: Upgrade pretalx to latest version

[OSGeo]

#3052: Upgrade pretalx to latest version
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 Reporter:  robe      |       Owner:  sac@…
     Type:  task      |      Status:  reopened
 Priority:  normal    |   Milestone:  Sysadmin Contract 2024-I
Component:  SysAdmin  |  Resolution:
 Keywords:            |
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Comment (by robe):

 @lucadelu,

 I've closed out #3162.  Staging is now based on yesterday's backup of
 production.

 Regarding the issue of /media and /static looking at our current
 production server I do see that there is an nginx instance that starts up
 as part of it, so guess maybe that's what's changed that nginx was built
 into the container before.

 I'm debating if I should just stick with docker and launch and nginx
 container beside, or just go with the supported way of running pretalx
 (which is not using docker), Rixx said he doesn't support docker
 officially.
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Ticket URL: <https://trac.osgeo.org/osgeo/ticket/3052#comment:17>
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