Python am I running in a docker and if so what is its ID

gistfile1.py

#Determines if we run within a docker container
#Might not be truly cleany as a way to check but it works ;)
def dockerized():
        if 'docker' in open('/proc/1/cgroup').read():
                return True

def getowndockerid():
        dockerid = ""
        for line in open('/proc/1/cgroup'):
                if "docker" in line:
                        dockerid = re.search(r".*/docker/(.*)$",line)
                        return dockerid.group(1)
        if dockerid == "":
                return False