langchain/.gitattributes

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Update dev container (#6189) Fixes https://github.com/hwchase17/langchain/issues/6172 As described in https://github.com/hwchase17/langchain/issues/6172, I'd love to help update the dev container in this project. Summary of changes: - Dev container now builds (the current container in this repo won't build for me) - Dockerfile updates - Update image to our [currently-maintained Python image](https://github.com/devcontainers/images/tree/main/src/python/.devcontainer) (`mcr.microsoft.com/devcontainers/python`) rather than the deprecated image from vscode-dev-containers - Move Dockerfile to root of repo - in order for `COPY` to work properly, it needs the files (in this case, `pyproject.toml` and `poetry.toml`) in the same directory - devcontainer.json updates - Removed `customizations` and `remoteUser` since they should be covered by the updated image in the Dockerfile - Update comments - Update docker-compose.yaml to properly point to updated Dockerfile - Add a .gitattributes to avoid line ending conversions, which can result in hundreds of pending changes ([info](https://code.visualstudio.com/docs/devcontainers/tips-and-tricks#_resolving-git-line-ending-issues-in-containers-resulting-in-many-modified-files)) - Add a README in the .devcontainer folder and info on the dev container in the contributing.md Outstanding questions: - Is it expected for `poetry install` to take some time? It takes about 30 minutes for this dev container to finish building in a Codespace, but a user should only have to experience this once. Through some online investigation, this doesn't seem unusual - Versions of poetry newer than 1.3.2 failed every time - based on some of the guidance in contributing.md and other online resources, it seemed changing poetry versions might be a good solution. 1.3.2 is from Jan 2023 --------- Co-authored-by: bamurtaugh <brmurtau@microsoft.com> Co-authored-by: Samruddhi Khandale <samruddhikhandale@github.com> 2023-06-16 22:42:14 +00:00			`* text=auto eol=lf`
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