mount the .cache directory (which stores huggingface downloads) as a docker volume pointing to ~/.cache

[AskAlice]

currently if invoke ai downloads/installs any configs using the huggingface library (which downloads blobs of the repos instead of files), the .cache goes into the .data folder, but users might have other applications that would like to re-use the models stored there.

I think the .cache dir should be mounted by default... like this for example

x-base_service: &base_service
  ports:
    - "7860:7860"
  volumes:
    - &v1 ./data:/data
    - &v2 ./output:/output
    - &v3 ./../.cache/:/data/.cache
    ```

[AbdBarho]

I do think that we should switch to docker volumes instead of just binds.

I am not sure if separating the .cache. has no downsides. From my experience with a bad internet connection, I had to constantly clear the cache folder because of corrupted downloads, it would be harder to isolate these files when it uses the host cache.

Another point is that the cache folder does not include hugging face stuff only, but other things as well.

Last point would be, if libs write some os-dependant data in the cache folder, they would likely crash if for example the host is windows but the container is linux.

is ~/.cache is the same path on windows and linux?

If this would be implemented, it is definitely a major version and a breaking change.

[AskAlice]

in my experience if a download fails half way through, when you run the command to download it again, it tries again.

I don't know why your downloads would magically corrupt themselves if the download were successful, though.

Perhaps it should be an alternate method, one that is commented out, but easily changed.

Also, yes they are in the same relative path on both mac and linux, though maaybe it depends on an environment variable? not sure

[AbdBarho]

It might get corrupted while downloading, not after the download, #269.

The cache folder seems to be dependant on many things, but also environment variables
https://github.com/huggingface/huggingface_hub/blob/fb9f63793d69316d0957772e962ac6346da7f167/src/huggingface_hub/constants.py#L73-L88

I will give it a look and see if it is possible to provide an easy way of re-using the host's .cache.

Another potential complication that just came to mind is file ownership, since the containers run as root.

[AskAlice]

Thank you for doing this finally https://github.com/AbdBarho/stable-diffusion-webui-docker/releases/tag/8.0.0