Description:

When running tests using a custom Docker image based on Ubuntu 22.04, the workflow fails during Python setup due to GLIBC version mismatch errors. The same workflow works correctly when Python is installed using Deadsnakes PPA, uv, or pyenv inside the container.

tests:
  name: Unit tests and coverage
  runs-on: ubuntu-latest

  container:
    image: custom-image-based-on-ubuntu22
    options: --entrypoint /bin/bash

  steps:
    - uses: actions/checkout@v4
    - uses: actions/setup-python@v5
      with:
        python-version: '3.12'
    - run: |
        python -m venv /env
        . /env/bin/activate
        pip install --upgrade pip
        pip install -r requirements/requirements_doc.txt

Observer error

python: /lib/x86_64-linux-gnu/libc.so.6: version `GLIBC_2.34' not found
python: /lib/x86_64-linux-gnu/libm.so.6: version `GLIBC_2.38' not found
python: /lib/x86_64-linux-gnu/libc.so.6: version `GLIBC_2.38' not found

workflow failure

Action version:
v5

Platform:

• Ubuntu
• macOS
• Windows

Runner type:

• Hosted
• Self-hosted

Tools version:

3.10,3.11,3.12,3.13
Repro steps:

https://github.com/ansys/pymechanical-embedding-examples/actions/runs/18412444483/job/52468115183

Expected behavior:
Expected to create virtual environment
Actual behavior:
Giving error

python: /lib/x86_64-linux-gnu/libc.so.6: version `GLIBC_2.34' not found
python: /lib/x86_64-linux-gnu/libm.so.6: version `GLIBC_2.38' not found
python: /lib/x86_64-linux-gnu/libc.so.6: version `GLIBC_2.38' not found