GitLab

* cmd: support OLLAMA_HOST environment variable

This commit adds support for the OLLAMA_HOST environment
variable. This variable can be used to specify the host to which
the client should connect. This is useful when the client is
running somewhere other than the host where the server is running.

The new api.FromEnv function is used to read configure clients from the
environment. Clients wishing to use the environment variable being
consistent with the Ollama CLI can use this new function.

* Update api/client.go
Co-authored-by: Jeffrey Morgan <jmorganca@gmail.com>

* Update api/client.go
Co-authored-by: Jeffrey Morgan <jmorganca@gmail.com>

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Co-authored-by: Jeffrey Morgan <jmorganca@gmail.com>

close open files

update llama.cpp

Update langchainpy.md

- re-use previously evaluated embeddings when possible
- change embeddings digest identifier to be based on model name and embedded file path

base_url value for Ollama object creation is corrected.

Add tutorials for using Langchain with ollama

Signed-off-by: Matt Williams <m@technovangelist.com>

Co-authored-by: Bruce MacDonald <brucewmacdonald@gmail.com>

Co-authored-by: Bruce MacDonald <brucewmacdonald@gmail.com>

Co-authored-by: Bruce MacDonald <brucewmacdonald@gmail.com>

ggml: fix off by one error

remove used Unknown FileType