Update 'nextcloud/README.md'
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		@@ -21,5 +21,14 @@ Do as much as is possible with the docker setup. The PHP stuff for example is no
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# Photo Preview Generation:
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- Photo viewer tweaks: https://rayagainstthemachine.net/linux%20administration/nextcloud-photos/
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- Use these values to svae space on prieview files and speed nextcloud up. https://ownyourbits.com/2019/06/29/understanding-and-improving-nextcloud-previews/
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```sh
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occ config:app:set previewgenerator squareSizes --value="32 256"
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occ config:app:set previewgenerator widthSizes  --value="256 384"
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occ config:app:set previewgenerator heightSizes --value="256"
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occ config:system:set preview_max_x --value 2048
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occ config:system:set preview_max_y --value 2048
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occ config:system:set jpeg_quality --value 60
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oc config:app:set preview jpeg_quality --value="60"
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```
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- I created a cron Job outside the container using the `occ` client command to trigger photo pre generation every day.
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- Maybe this can be added to the cron nextcloud container?
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