Running mssh: No user exists for uid 1000

Question

My Dockerfile and Jenkinsfile are currently set up like this.

Dockerfile:

FROM python:3.7
RUN pip install ec2instanceconnectcli

Jenkinsfile snippet:

     stage('Initialize Docker'){
        steps{
            script{
            def dockerHome = tool 'myDocker'
            env.PATH = "${dockerHome}/bin:${env.PATH}"
            }
        }
    }

    stage('EC2 Connection'){
       
        agent{
            dockerfile true
            }
 
        steps{
            withAWS(credentials: '********', region: 'us-east-2') {
                   sh 'mssh ************ --region us-east-2'
           }
        }
        
    }

I am not sure why I am getting this error:

+ mssh ************ --region us-east-2
No user exists for uid 1000

Any suggestions would be greatly appreciated.

Do you want to solve this by ensuring a user at UID 1000, or by executing the SSH protocol with a different user? Either would solve the error here. — Matthew Schuchard, Jul 13 '22 at 15:40
I'm pretty new to this, but I think ensuring a user at UID 1000 would be fine. — marcorivera8, Jul 13 '22 at 15:45
I received this new error when I added the user, have you dealt with this before?https://stackoverflow.com/questions/72974048/running-mssh-pseudo-terminal-will-not-be-allocated-because-stdin-is-not-a-termi — marcorivera8, Jul 14 '22 at 14:02

score 2 · Accepted Answer · answered Jul 13 '22 at 17:04

The image tag python:3.7 is equivalent to 3.7.13-bullseye, so we are working with the latest version of Debian here. Debian requires use of adduser for adding a new user. We can modify your Dockerfile:

FROM python:3.7
RUN pip install ec2instanceconnectcli && adduser --uid 1000 jenkins

will create the equivalent jenkins user inside the image for the agent. The expected jenkins user for the sh step method will then exist.

Note the jenkins user also has e.g. shell set to /sbin/nologin, and you can incrementally modify for this extra security if it does not break functionality.

Running mssh: No user exists for uid 1000

1 Answers1