chore: create devcontainer setup

[Steffen911]

Disclaimer: Experimental PR review

Greptile Summary

Updated On: 2025-09-17 09:55:06 UTC

This PR adds a devcontainer setup to standardize the development environment for the Langfuse Python SDK. The changes include two new files: a Dockerfile and a post-creation script that automate the development environment setup.

The Dockerfile creates a development container based on Microsoft's Python 3.12 devcontainer image, which aligns with the project's existing CI configuration that uses Python 3.12 for type checking. It installs Poetry (the project's chosen dependency manager as defined in pyproject.toml) and two Poetry plugins: poetry-dotenv-plugin for environment variable management and poetry-bumpversion for version management. The || true fallback ensures container builds don't fail if plugin installation encounters issues.

The post-creation script automates the typical developer setup workflow by installing all project dependencies with poetry install --all-extras, setting up pre-commit hooks with poetry run pre-commit install, and creating a .env file from .env.template if it doesn't already exist. This script uses proper error handling with set -e and provides informative output messages to guide developers through the setup process.

This devcontainer setup integrates seamlessly with the existing toolchain already configured in the repository, including Poetry for dependency management, pre-commit hooks for code quality, and the various development dependencies like ruff, mypy, and pytest defined in pyproject.toml. The addition supports the project's commitment to maintaining high code quality standards while reducing friction for new contributors.

PR Description Notes:

• The PR title uses "chore:" prefix which follows conventional commit standards
• No PR description was provided (pullrequestBody: null)

Confidence score: 5/5

• This PR is safe to merge with minimal risk
• Score reflects simple, well-structured configuration files that follow established patterns and don't modify core functionality
• No files require special attention

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