sudo: no tty present and no askpass program specified

[m-amr]

I am using MacOSX Captain as a host operating system
I have created a container from Ubuntu Images
The container bash run with root user by default

I have installed sudo through apt-get
then i had created non privileged user called test-user

i run the bash with test-user
docker exec -i -t -u test-user container-id bash

when i try to use sudo apt-get install
I get this error sudo: no tty present and no askpass program specified

I am trying to that because i read that i shouldn't use root or admin user to run any program because it will be a security problem.

[4gatepylon]

I have the same problem. For some people going to /etc/sudoers (sudoers is a file) and adding username ALL=(ALL) NOPASSWD: ALL (making it so that you don't need the password) works, so maybe you can try it out, but it hasn't worked for me. Anyone else got better suggestions?

[m-amr]

Yes it works for me,
try to edit the file using visudo command and make sure that you have entered the username correctly, but I am not sure that this solution is secured, if you forget to close the terminal anyone who use your laptop will use sudo command without a password to inject any program.

I am trying to find a way to enter password, but it is not working.

[joanrodriguez]

This also worked for me, use your actual username and not username

[holgerbrandl]

Same problem here. Although I have sudo permissions on the remote machine running docker, it somehow seems wrong to mess with the remote sudoers configuration to create a local docker-machine configuration.

[git-blame]

Similar issue. When building for aws, the default docker-machine ssh user is ubuntu. I'm trying to either create a different sudo user (something friendlier like demouser) or rename ubuntu user after I finish creating the remote VM.

In both cases, you can use (or script) similar instructions as from https://askubuntu.com/questions/34074/how-do-i-change-my-username. In a nutshell:

• Add new or temporary sudo user
• Optional:
  • Login as new/temporary user and change the name/home dir of ubuntu user

Both steps have the same issue, the new user or the changed "ubuntu" user requires you to specify a password for sudo to work. Unless you edit the sudoers file to set-up nopasswd option. There is some secret sauce with the original "ubuntu" (default) user which allows a password-less sudo despite no extra configuration in sudoers.