Set endpoint value from env var

[Adamska1008]

If environment variable HF_ENDPOINT exists, use it to build api.
fix #47

[yosefl20]

nice

[kulame]

When was this feature released, I also need this feature. HuggingFace is blocked in China

[Adamska1008]

When was this feature released, I also need this feature. HuggingFace is blocked in China

Never know, not one of the maintainers. The crate hasn't released new version for six months.

[kulame]

When was this feature released, I also need this feature. HuggingFace is blocked in China

Never know, not one of the maintainers. The crate hasn't been updated for six months.

Perhaps we need fork a chinese version

[pi314ever]

Adding this to tokio.rs would be nice as well so that the changes are symmetrical.

[theta-lin]

@Narsil @McPatate Dear maintainers, this feature is very important for people living in places where https://huggingface.co/ is blocked such as in China. A very easy workaround in these situations is to set HF_ENDPOINT to a mirror site such as https://hf-mirror.com/.

There are of course other ways to access Hugging Face when it is blocked. Unfortunately that requires the usage of proxy or VPN, which might be troublesome to set up considering that downstream projects like text-embeddings-inference are frequently run on containers and servers.

[McPatate]

lgtm! small nit on the code