What was happening is that the following snippet:
```dockerfile
CMD ["sleep", "20"]
```
Was incorrectly converted to:
```
sleep, 20
```
<!-- CURSOR_SUMMARY -->
---
> [!NOTE]
> Fixes parsing of Dockerfile CMD/ENTRYPOINT array syntax to a proper
start command and updates tests accordingly.
>
> - **Python SDK**:
> - `e2b/template/dockerfile_parser.py`: Parse CMD/ENTRYPOINT JSON array
(e.g., `["sleep", "20"]`) into a space-joined command (`sleep 20`) and
set as `start_cmd`.
> - **Tests**:
> - JS SDK and Python (sync/async): Add ENTRYPOINT case and assert
`startCmd`/`_start_cmd` equals `sleep 20`.
> - **Release**:
> - Changeset: patch bump for `@e2b/python-sdk`.
>
> <sup>Written by [Cursor
Bugbot](https://cursor.com/dashboard?tab=bugbot) for commit
ed257ab11e618ece3e5fe70f232a3265fd857ad4. This will update automatically
on new commits. Configure
[here](https://cursor.com/dashboard?tab=bugbot).</sup>
<!-- /CURSOR_SUMMARY -->
Mish Ushakov
7b687bddbb