document use of tmpfs with Docker

[kc9jud]

Describe the feature you'd like to request

I realized that, since #365, Recognize is using /tmp pretty heavily during recognition. I also realized that the default Docker Compose configuration doesn't use a tmpfs for /tmp within the container. This means it's hammering the storage writing and reading temporary image files. If you're on spinning rust, this can be slow, and if you're on SSD/flash, this can hasten the failure of your disk.

Describe the solution you'd like

It might be useful to document (somewhere?) that when using Docker (Compose), if the server is not memory-constrained, one should add an additional volume for /tmp:

docker run: Add --mount type=tmpfs,destination=/tmp to command line.

docker compose: Add the following to the volume section docker-compose.yml:

  app:
    image: nextcloud:25
    ...
    volumes:
      - type: tmpfs
        target: /tmp
      ...
    ...

Describe alternatives you've considered

Alternatively, this could/should be an issue with https://github.com/nextcloud/docker.

[kc9jud]

See also: #629

[Lipown]

I used this but then I was not able to have shared link of any file / folder persistent more than a minute. So either it is a bug or I do not recommend this method :)