fix(docker): install python-is-python3 so bare python resolves in containers#33226
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…ontainers
Debian 13 ships only `python3` — there's no `/usr/bin/python` symlink. When
the agent emits bash commands using bare `python` (which models do frequently
from their training prior), every such call fails with:
/usr/bin/bash: python: command not found
Tool terminal returned error … exit_code 127
The agent then retries with different approaches, sessions take longer, and
agent.log fills with WARNING noise.
`python-is-python3` is the standard Debian package that drops a
`/usr/bin/python → python3` symlink. ~30 KB, zero behavior change for
anything calling `python3` directly; transparent fix for everything else.
Fixes #33178.
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Summary
Drop a
/usr/bin/python → python3symlink into the Docker image so barepythonworks.Root cause
Debian 13 ships only
python3— nopythonsymlink. When the agent emits bash commands using barepython(which models do frequently from their training prior), every such call fails inside the container with:The agent then retries with different approaches, sessions take longer, and
agent.logfills with WARNING noise.Changes
Dockerfile: addpython-is-python3to the apt install line on the supervisor stage.python-is-python3is the standard Debian package that drops a/usr/bin/python → python3symlink. Roughly 30 KB. Zero behavior change for anything that already callspython3directly; transparent fix for everything else.Validation
which pythoninside container/usr/bin/pythonpython --versioncommand not found(127)Python 3.13.xpythoncc @benbarclay
Fixes #33178