Do not backup image cache - Implement Backup core only

[lapineige]

Problem

If you choose to download articles images in your Wallabag, this "cache" is taking a lot of space. Users might want to backup everything but these images (as your can "download" them again later) to save space.

Solution

Implement BACKUP_CORE_ONLY : in that case the image cache is not saved.

PR Status

• [ ] Code finished and ready to be reviewed/tested
• [ ] The fix/enhancement were manually tested (if applicable)

Automatic tests

Automatic tests can be triggered on https://ci-apps-dev.yunohost.org/ after creating the PR, by commenting "!testme", "!gogogadgetoci" or "By the power of systemd, I invoke The Great App CI to test this Pull Request!". (N.B. : for this to work you need to be a member of the Yunohost-Apps organization)

[lapineige]

!testme

[yunohost-bot]

Fingers crossed!

[lapineige]

I don't really know how to exclude this folder from the backup… If Yunohost backup helper (https://yunohost.org/en/packaging_apps_helpers#ynh-backup) had an option for that it would be better :sweat_smile:

I'm not happy with the current solution... if /tmp is not in the same partition it can be a real trouble.

[lapineige]

CI is not working right now.

[lapineige]

CI fails because the directory does not exist… I need to had a condition.

[lapineige]

No time to work on this right now, help appreciated :)

[Salamandar]

rebased.

[lapineige]

!testme

[yunohost-bot]

:carousel_horse: