docker compose up build failed

[dwainew]

the recommended docker installation failed with the following result:

Installing collected packages: pip, setuptools, six Found existing installation: pip 8.1.1 Not uninstalling pip at /usr/lib/python3/dist-packages, outside environment /usr Successfully installed pip-21.0.1 setuptools-53.0.0 six-1.15.0 Traceback (most recent call last): File "/usr/lib/python3.5/runpy.py", line 184, in _run_module_as_main "main", mod_spec) File "/usr/lib/python3.5/runpy.py", line 85, in _run_code exec(code, run_globals) File "/usr/local/lib/python3.5/dist-packages/pip/main.py", line 21, in from pip._internal.cli.main import main as _main File "/usr/local/lib/python3.5/dist-packages/pip/_internal/cli/main.py", line 60 sys.stderr.write(f"ERROR: {exc}") ^ SyntaxError: invalid syntax Traceback (most recent call last): File "/usr/lib/python3.5/runpy.py", line 184, in _run_module_as_main "main", mod_spec) File "/usr/lib/python3.5/runpy.py", line 85, in _run_code exec(code, run_globals) File "/usr/local/lib/python3.5/dist-packages/pip/main.py", line 21, in from pip._internal.cli.main import main as _main File "/usr/local/lib/python3.5/dist-packages/pip/_internal/cli/main.py", line 60 sys.stderr.write(f"ERROR: {exc}") ^ SyntaxError: invalid syntax ERROR: Service 'app' failed to build : The command '/bin/sh -c /app/provision.sh prepare_install && /app/provision.sh install_deps && /app/provision.sh install_qtwebkit_deps && /app/provision.sh download_official_qt && /app/provision.sh install_official_qt && /app/provision.sh install_qtwebkit &&
/app/provision.sh install_pyqt5 && /app/provision.sh install_python_deps && /app/provision.sh install_flash && /app/provision.sh install_msfonts &&
/app/provision.sh install_extra_fonts && /app/provision.sh remove_builddeps && /app/provision.sh remove_extra' returned a non-zero code: 1