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  1. Jenkins
  2. JENKINS-58668

Doesn't create a file within docker.inside {}

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      Using a `configFileProvider` within a `docker.inside {}` code block doesn't create the configuration file *in* the container but on *the host* running the container.

      node {
          docker.image('alpine').inside {
              configFileProvider([configFile(fileId: 'test-123', targetLocation: '/foobar')]) {
                  echo "In the container"
                  try {
                      sh "cat /foobar"
                  } catch (Exception exc) {
                      println exc
                  }
              }
          }
      
          echo "On the container"
          sh "cat /foobar"
      }
      

      Produces the following output:

      [Pipeline] Start of Pipeline
      [Pipeline] node
      Running on qemu2 in /home/jenkins/workspace/t-jenkins_bug-config-file-docker
      [Pipeline] {
      [Pipeline] withDockerServer
      [Pipeline] {
      [Pipeline] sh
      + docker inspect -f . alpine
      .
      [Pipeline] withDockerContainer
      qemu2 does not seem to be running inside a container
      $ docker run -t -d -u 0:0 -w /home/jenkins/workspace/t-jenkins_bug-config-file-docker -v /home/jenkins/workspace/t-jenkins_bug-config-file-docker:/home/jenkins/workspace/t-jenkins_bug-config-file-docker:rw,z -v /home/jenkins/workspace/t-jenkins_bug-config-file-docker@tmp:/home/jenkins/workspace/t-jenkins_bug-config-file-docker@tmp:rw,z -e ******** -e ******** -e ******** -e ******** -e ******** -e ******** -e ******** -e ******** -e ******** -e ******** -e ******** -e ******** -e ******** -e ******** -e ******** -e ******** -e ******** -e ******** -e ******** -e ******** -e ******** -e ******** -e ******** -e ******** -e ******** -e ******** -e ******** -e ******** -e ******** -e ******** -e ******** -e ******** -e ******** -e ******** -e ******** -e ******** alpine cat
      $ docker top e4288736bfaaa9adb71e175384021ae505f1cab767b3ef4219783097b57ffb81 -eo pid,comm
      [Pipeline] {
      [Pipeline] configFileProvider
      provisioning config files...
      copy managed file [MyCustom] to file:/foobar
      [Pipeline] {
      [Pipeline] echo
      In the container
      [Pipeline] sh
      + cat /foobar
      cat: can't open '/foobar': No such file or directory
      [Pipeline] echo
      hudson.AbortException: script returned exit code 1
      [Pipeline] }
      [Pipeline] // configFileProvider
      [Pipeline] }
      $ docker stop --time=1 e4288736bfaaa9adb71e175384021ae505f1cab767b3ef4219783097b57ffb81
      $ docker rm -f e4288736bfaaa9adb71e175384021ae505f1cab767b3ef4219783097b57ffb81
      [Pipeline] // withDockerContainer
      [Pipeline] }
      [Pipeline] // withDockerServer
      [Pipeline] echo
      On the container
      [Pipeline] sh
      + cat /foobar
      123
      456[Pipeline] }
      [Pipeline] // node
      [Pipeline] End of Pipeline
      

      (I have an additional withDockerServer around in this example, and Jenkins connects as root on the Docker host machine.)

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            domi Dominik Bartholdi
            multani Jonathan Ballet
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              Created:
              Updated:
              Resolved: