tests: fix and enable doctests (#2546)

* fix doctest

* Update cibuildwheel/oci_container.py

Co-authored-by: Joe Rickerby <joerick@mac.com>

* Update cibuildwheel/oci_container.py

Co-authored-by: Joe Rickerby <joerick@mac.com>

* Update cibuildwheel/oci_container.py

Co-authored-by: Joe Rickerby <joerick@mac.com>

* Add xdoctest to CI

* Add doctests to run tests

* Replace test map with new native method

* Forgot key for arm64

* Allow doctests to be filtered on circleci

---------

Co-authored-by: Joe Rickerby <joerick@mac.com>

noxfile.py

@@ -58,6 +58,7 @@ def tests(session: nox.Session) -> None:
         session.run("pytest", *session.posargs)
     else:
         unit_test_args = ["--run-docker"] if sys.platform.startswith("linux") else []
+        session.run("pytest", "cibuildwheel")  # run doctests
         session.run("pytest", "unit_test", *unit_test_args)
         session.run("pytest", "test", "-x", "--durations", "0", "--timeout=2400", "test")