Feature request: run the OCR process on another server

[ferdiga]

Describe the feature request

some NC-Service Providers do not offer OCR - support, because of the system load during ocrmypdf execution.

would be great to implement a solution like for fulltextsearch running in a docker on another server.
As no os-access is granted by the Service Providers (understandable) it must be solved in the APP IMO

System

• App version: [VERSION]
• Nextcloud version: [VERSION]
• PHP version: [VERSION]
• Environment: [Docker/native Apache/native PHP FPM/...]
• ocrmypdf version: [VERSION]

How to reproduce

Steps to reproduce the behavior:

1. Go to '...'
2. Click on '....'
3. Scroll down to '....'
4. See error

Screenshots

If applicable, add screenshots to help explain your problem.

Server log

Please paste relevant content of your nextcloud.log file here. It might make sense to first decrease the Loglevel. Also, since the OCR process runs asynchronously, run your cron.php before copying the logs here.

Paste relevant server log lines here. Make sure to trim sensitive information.

Browser log

If you're observing Browser errors, please paste your developer tools logs here.

Help for Chrome: https://developer.chrome.com/docs/devtools/console/#view
Help for Firefox: https://firefox-source-docs.mozilla.org/devtools-user/browser_console/index.html

Paste your developer tools logs here. 

Additional context

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[R0Wi]

There's already a discussion going on here. The main problem is that the implementation of such a "ocrMyPdf service" requires quite a bit of work. Things like encrypted communication and authentication are necessary to realize this.

Because of the fact that we've only very limited dev capacity, unfortunately this is definitely nothing for the near future. Of course contribution is always welcome, so if there's anybody willing to participate - feel free 👍