I do not can connect vpn is from docker

Good day!
I do not can connect vpn is from docker:
run container:
docker run -d -it --privileged --rm --name cisco_vpn cisco_vpn:v1 /bin/bash

run command:
docker exec -it cisco_vpn echo “password” | openconnect --background --authgroup MRdhsdh -u example --passwd-on-stdin vpn.site.ru

get error:
Login failed.
Please enter your username and password.

If i run this command is from shell docker it work!

My Dockerfile:
FROM ubuntu:20.04
RUN apt-get update && apt-get install apt-utils openconnect openssh-client -y
WORKDIR /home

Help me please.