fix(sdks): handle multi-source COPY/ADD in fromDockerfile

[mishushakov]

Summary

• Fixes fromDockerfile: multi-source COPY silently drops all sources except the first #1349: Template.fromDockerfile (JS) and Template.from_dockerfile (Python) silently dropped intermediate sources from multi-source COPY/ADD, keeping only the first one and producing broken images without warning.
• Both parsers now emit one copy() call per source to the same destination (matching Docker semantics), preserving --chown across all calls.
• Added tests in both SDKs (multi-source COPY, and multi-source COPY with --chown), plus changesets for e2b and @e2b/python-sdk.

Test plan

• pnpm run test tests/template/methods/fromDockerfile.test.ts (JS)
• poetry run pytest tests/{async,sync}/template_*/methods/test_from_dockerfile.py (Python)
• pnpm run format / pnpm run lint

🤖 Generated with Claude Code

[github-actions]

Package Artifacts

Built from f878330. Download artifacts from this workflow run.

JS SDK (e2b@2.26.1-mishushakov-fix-issue-1349.0):

npm install ./e2b-2.26.1-mishushakov-fix-issue-1349.0.tgz

CLI (@e2b/cli@2.10.3-mishushakov-fix-issue-1349.0):

npm install ./e2b-cli-2.10.3-mishushakov-fix-issue-1349.0.tgz

Python SDK (e2b==2.24.0+mishushakov-fix-issue-1349):

pip install ./e2b-2.24.0+mishushakov.fix.issue.1349-py3-none-any.whl

[cursor]

PR Summary

Low Risk
Scoped parser fix with regression tests; behavior change only affects multi-source COPY/ADD, which was previously wrong.

Overview
Fixes a silent correctness bug in Dockerfile → template conversion: multi-source COPY/ADD lines (e.g. COPY a b c /dest/) previously kept only the first source, so templates could miss files with no error.

JS (dockerfileParser.ts) and Python (dockerfile_parser.py) now treat every path before the destination as a source and emit one copy() per source to the same dest, applying --chown on each call. Tests cover plain multi-source COPY and multi-source COPY with --chown in the JS SDK and Python async/sync suites; changesets patch e2b and @e2b/python-sdk.

^{Reviewed by Cursor Bugbot for commit a5407c6. Bugbot is set up for automated code reviews on this repo. Configure here.}

[changeset-bot]

🦋 Changeset detected

Latest commit: a5407c6

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 2 packages

Name	Type
e2b	Patch
@e2b/python-sdk	Patch

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[matthewlouisbrockman]

tests only cover COPY not ADD but not blocking