Jenkinsfile multiline sh continue on error-CodePudding

I want to do some Docker cleanup steps before a Jenkins build. This is the build step:

steps {
    script {
        try {
            sh '''
                docker container stop  $(docker ps -q)
                docker rm $(docker ps -aq)
                docker  rmi -f $(docker images -q)
                docker build -f Dockerfile_build | tee buildlog.txt
            '''
        } catch(err) {
            echo err.getMessage()
        }
    }
}

The first lines of the sh part may fail, causing the whole build to fail:

[Pipeline] sh
docker ps -q
docker container stop Error: you must provide at least one name or id
[Pipeline] echo
script returned exit code 125

However, that only means that there's no cleanup to do. I want to continue the build job, no matter how many of the first three lines fail. My question is whether I have to put each of them in its own try/catch block, or if there's a more concise way of saying "try these and ignore any errors".

CodePudding user response：

If you want to continue your script even if you get errors for individual commands you can set e in your script, but the sh step will never error out. You can also ignore first 3 commands and then error out the last command as well by setting -e and removing it. See the example below.

sh '''
  #!/bin/bash
  set  e
  docker container stop  $(docker ps -q)
  docker rm $(docker ps -aq)
  docker  rmi -f $(docker images -q)
  set -e
  docker build -f Dockerfile_build | tee buildlog.txt
'''