> [dev_container_auto_added_stage_label 3/18] RUN python3 -m pip install conan && conan --version:
#7 1.538 error: externally-managed-environment
#7 1.538
#7 1.538 × This environment is externally managed
#7 1.538 ╰─> To install Python packages system-wide, try apt install
#7 1.538 python3-xyz, where xyz is the package you are trying to
#7 1.538 install.
#7 1.538
#7 1.538 If you wish to install a non-Debian-packaged Python package,
#7 1.538 create a virtual environment using python3 -m venv path/to/venv.
#7 1.538 Then use path/to/venv/bin/python and path/to/venv/bin/pip. Make
#7 1.538 sure you have python3-full installed.
#7 1.538
#7 1.538 If you wish to install a non-Debian packaged Python application,
#7 1.538 it may be easiest to use pipx install xyz, which will manage a
#7 1.538 virtual environment for you. Make sure you have pipx installed.
#7 1.538
#7 1.538 See /usr/share/doc/python3.11/README.venv for more information.
#7 1.538
#7 1.538 note: If you believe this is a mistake, please contact your Python installation or OS distribution provider. You can override this, at the risk of breaking your Python installation or OS, by passing --break-system-packages.
#7 1.538 hint: See PEP 668 for the detailed specification.
EDIT: policy shift in Ubuntu >= 23.04: https://www.omgubuntu.co.uk/2023/04/pip-install-error-externally-managed-environment-fix