This pull request introduces persistent shell support for Docker containers in the BaseContainer class, enabling command execution with maintained context and improved error handling. It also refactors several LangGraph nodes to allow more flexible keying and patch handling, improving modularity and configurability across the pipeline. Additionally, a new DockerException class is introduced for clearer exception handling related to Docker operations.

Docker Container Management Enhancements:

• Added persistent shell support to BaseContainer using pexpect, including initialization, restart logic, and cleanup; command execution now uses this shell for better context and output handling. [1] [2] [3] [4] [5] [6] [7] [8]
• Introduced DockerException as a base class for Docker-related errors for clearer error reporting.

LangGraph Node Refactors and Flexibility:

• Refactored FinalPatchSelectionNode to use configurable keys for candidate patches, allowing it to operate on arbitrary patch lists in the state dictionary. [1] [2] [3] [4]
• Updated PatchNormalizationNode to accept input and output keys as parameters, enabling greater flexibility in patch deduplication and normalization stages. [1] [2] [3] [4]
• Enhanced GetPassRegressionTestPatchSubgraphNode to allow configurable return keys and patch formats, improving integration with downstream nodes. [1] [2] [3]

Bug Verification and Test Node Adjustments:

• Adjusted logic in bug verification and regression test nodes to better handle patch lists and output formats, ensuring correct propagation of candidate patches and logs. [1] [2]

Other Improvements:

• Minor prompt and typo corrections for clarity in regression test instructions.