Disable OnlyOffice CPU-heavy tasks on startup

During startup, OO consumes a massive amount of CPU for re-generating fonts and themes. There's an option to disable CPU-heavy tasks on startup which we could make use of. Not sure about the downsides of this though.

marked this issue as related to stackspin#1393

added CI Prio::High labels

I remember that Drebs disabled font generation in his custom OO image some while ago. I can try to find that and maybe ask him about his experience. If we don't find any obstacle with this we should enable it generally, not only in CI

https://0xacab.org/infrared/platform_wg/docker-onlyoffice-documentserver#adding-new-fonts:

To add new fonts, just follow upstream documentation:

https://helpcenter.onlyoffice.com/de/server/linux/document/install-fonts.aspx

The needed files will be generated when the container starts. This is not ideal because generation takes time, but is a workaround upstream implements to make it so people can add their fonts to the pre-built images.

If you don't need this feature, you can skip font generation by running the container with SKIP_FONTS_GENERATION=true environment variable. Just add it to the .venv file in the root of the repository prior to starting containers with docker-compose.

changed milestone to %2.0

mentioned in issue stackspin#1393

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changed title from Disable CPU-heavy tasks on startup to Disable OnlyOffice CPU-heavy tasks on startup

created branch 1069-disable-cpu-heavy-tasks-on-startup to address this issue

mentioned in merge request !268 (merged)

mentioned in commit 60dc0ed7

mentioned in commit db8f32cd

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assigned to @varac

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mentioned in commit fb77a575

mentioned in commit 038f11cc

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