#include "/home/tmds/repos/coreclr/src/gc/unix/cgroup.cpp"

int main()
{
	CGroup cgroup;
	unsigned int cpus = 0;
	size_t mem = 0;
	if (cgroup.GetPhysicalMemoryLimit(&mem))
	{
		printf("mem: %zu\n", mem);
	}
	if (cgroup.GetCpuLimit(&cpus))
	{
		printf("cpu: %d\n", cpus);
	}
	return 0;
}

g++ main.cpp

FROM fedora:25
RUN yum install -y libstdc++.so.6
WORKDIR /root
ADD ./a.out .
CMD ./a.out

$ docker build -t docker_limit .
$ docker run docker_limit
mem: 9223372036854771712
$ docker run --memory 300m docker_limit
mem: 314572800
$ docker run --cpu-period 1000 --cpu-quota 1000  docker_limit
mem: 9223372036854771712
cpu: 1
$ docker run --cpu-period 1000 --cpu-quota 2000  docker_limit
mem: 9223372036854771712
cpu: 2