check if python code runs inside a kubernetes pod container or docker container

is_container.py

# check if running in a container in kubernetes or docker
is_container = (
    path.exists("/var/run/secrets/kubernetes.io/serviceaccount/namespace")
    or path.exists("/.dockerenv")
    or (
        path.isfile("/proc/self/cgroup")
        and (
            any("kubepods" in line for line in open("/proc/self/cgroup"))
            or any("docker" in line for line in open("/proc/self/cgroup"))
        )
    )
)