RUNNER_TEMP not mounted in docker based actions

[jnystad]

Env var RUNNERTEMP points to /home/runner/work/_temp but this directory is not mounted on docker based actions. Contents from previous job steps that are output to this directory is therefore not available. An example is Azure/aks-set-context which stores the resulting kubeconfig in kubeconfig[timestamp] directly under RUNNER_TEMP. This kubeconfig is therefore not available in docker actions.

Steps to reproduce the behavior:

1. Use Azure/aks-set-context
2. Use a docker action relying on kubeconfig

Expected behavior Docker action should have the RUNNER_TEMP directory mounted at the same path.

Runner Version and Platform

Current runner version: '2.294.0' Operating System Ubuntu 20.04.4 LTS

What's not working?

"kubectl" config use-context my-context W0707 12:34:48.857696 29 loader.go:221] Config not found: /home/runner/work/_temp/kubeconfig_1657197285854

[nikola-jokic]

Hi @jnystad,

Thank you for submitting this issue! The feature flag for translating paths is currently off. There was an issue with translating paths for some actions, so we turned off the feature flag until we figure out the best way to translate those inputs. After we finalize the fix, I think that this issue will be resolved :relaxed:

[jnystad]

Perhaps, but I fail to see the _temp root directory mapped or mounted anywhere. Also, docker actions mount ${RUNNER_TEMP}/_github_home as /github/home, while $HOME in other actions are /home/runner. This is also not mapped, as far as I can tell.

Is this intentional? I'm sure what Azure does may not be recommended, but if it's expected to work across docker and non-docker actions, it should probably be consistent.

[chancez]

I also have the problem that a javascript action I'm using writes into /home/runnner/.config but my own docker based action doesn't mount that at all. Even if it was mounted somewhere else and the location was exported as a different env-var that would help.

[gerwinjansen]

I would like to transfer a test result file from one workflow step to another. I found ${{ runner.temp }} in the Github documentation.

The test result publisher is a docker-based action. I combined this with the above example:

- name: Publish test results
  uses: EnricoMi/publish-unit-test-result-action@v2
  if: always()
  id: test-results
  with:
    files: "${{ runner.temp }}/TestResults/*.trx"

But it results in Warning: Could not find any files for /opt/actions-runner/_work/_temp/TestResults/*.trx

When I replace ${{ runner.temp }} with ${{ github.workspace }} in both test runner and publisher, it works. So the official documentation seems broken for docker-based actions...

@nikola-jokic: what is the status of the translating paths issue? Do you have a link to the issue so I can watch it?

[nikola-jokic]

Hey @gerwinjansen,

If the github.workspace works and the runner.temp doesn't, I assume the translation is correct. Can you please provide an example workflow, so I can reproduce the issue?

The PR for translation is: https://github.com/actions/runner/pull/2517, but it is merged and part of the latest release

[gerwinjansen]

Hi @nikola-jokic,

Here is the reproduce: https://github.com/gerwinjansen/runner-temp-not-mounted-on-docker-based-action The workflow steps:

- name: Run unit tests
  run: cp ${{ github.workspace }}/example.trx ${{ runner.temp }}/example.trx

- name: Publish test results
  uses: EnricoMi/publish-unit-test-result-action@v2
  with:
    files: "${{ runner.temp }}/example.trx"

And the relevant console output

Run cp /home/runner/work/runner-temp-not-mounted-on-docker-based-action/runner-temp-not-mounted-on-docker-based-action/example.trx /home/runner/work/_temp/example.trx

[command]/usr/bin/docker run --name ghcri...... <removed for brevity>
  -e "RUNNER_TEMP"
  -v "/var/run/docker.sock":"/var/run/docker.sock"
  -v "/home/runner/work/_temp/_github_home":"/github/home"
  -v "/home/runner/work/_temp/_github_workflow":"/github/workflow"
  -v "/home/runner/work/_temp/_runner_file_commands":"/github/file_commands"
  -v "/home/runner/work/runner-temp-not-mounted-on-docker-based-action/runner-temp-not-mounted-on-docker-based-action":"/github/workspace"

##[warning]Could not find any files for /home/runner/work/_temp/example.trx

Looks like the volume mount for runner.temp is missing.

[nwalfield]

As a workaround for this, I copy the files that I need to /home/runner/work/_temp/_github_home, which is mounted as /github/home in the docker container.

[gerwinjansen]

@nikola-jokic : did the reproduction above help you analyze the issue?

[backdround]

As a workaround for now, use:

• /home/runner/work/_temp/_github_home in your steps
• /github/home in the docker container

:warning: Warning: If you are using docker for your job then use /github/home everywhere!

Thanks @nwalfield

[gerwinjansen]

@nikola-jokic : did the reproduction above help you analyze the issue?

[artificial-aidan]

As a workaround for now, use:

• /runner/_work/_temp/_github_home in your steps
• /github/home in the docker container

⚠️ Warning: If you are using docker for your job then use /github/home everywhere!

Thanks @nwalfield

Small correction.

I also had to make the _github_home directory. But maybe that's because it was a hosted runner?

[artificial-aidan]

It seems to just be a problem with runner.temp not being mounted into the container.

Simple action:

      - uses: docker://ubuntu:latest
        with:
          entrypoint: /bin/bash
          args: -c "echo /github/home/ && ls -al /github/home/"

Command that runs:

/usr/local/bin/docker run --name ubuntulatest_8f7ed3 --label 865e75 --workdir /github/workspace --rm -e "CI_REG" -e "GH_REG" -e "DOCKER_REG" -e "DOCKER_BUILDKIT" -e "IMG_NAME" -e "DOCKER_METADATA_OUTPUT_VERSION" -e "DOCKER_METADATA_OUTPUT_TAGS" -e "DOCKER_METADATA_OUTPUT_LABELS" -e "DOCKER_METADATA_OUTPUT_JSON" -e "DOCKER_METADATA_OUTPUT_BAKE_FILE" -e "INPUT_ENTRYPOINT" -e "INPUT_ARGS" -e "HOME" -e "GITHUB_JOB" -e "GITHUB_REF" -e "GITHUB_SHA" -e "GITHUB_REPOSITORY" -e "GITHUB_REPOSITORY_OWNER" -e "GITHUB_REPOSITORY_OWNER_ID" -e "GITHUB_RUN_ID" -e "GITHUB_RUN_NUMBER" -e "GITHUB_RETENTION_DAYS" -e "GITHUB_RUN_ATTEMPT" -e "GITHUB_REPOSITORY_ID" -e "GITHUB_ACTOR_ID" -e "GITHUB_ACTOR" -e "GITHUB_TRIGGERING_ACTOR" -e "GITHUB_WORKFLOW" -e "GITHUB_HEAD_REF" -e "GITHUB_BASE_REF" -e "GITHUB_EVENT_NAME" -e "GITHUB_SERVER_URL" -e "GITHUB_API_URL" -e "GITHUB_GRAPHQL_URL" -e "GITHUB_REF_NAME" -e "GITHUB_REF_PROTECTED" -e "GITHUB_REF_TYPE" -e "GITHUB_WORKFLOW_REF" -e "GITHUB_WORKFLOW_SHA" -e "GITHUB_WORKSPACE" -e "GITHUB_EVENT_PATH" -e "GITHUB_PATH" -e "GITHUB_ENV" -e "GITHUB_STEP_SUMMARY" -e "GITHUB_STATE" -e "GITHUB_OUTPUT" -e "GITHUB_ACTION" -e "GITHUB_ACTION_REPOSITORY" -e "GITHUB_ACTION_REF" -e "RUNNER_OS" -e "RUNNER_ARCH" -e "RUNNER_NAME" -e "RUNNER_ENVIRONMENT" -e "RUNNER_TOOL_CACHE" -e "RUNNER_TEMP" -e "RUNNER_WORKSPACE" -e "ACTIONS_RUNTIME_URL" -e "ACTIONS_RUNTIME_TOKEN" -e "ACTIONS_CACHE_URL" -e "ACTIONS_RESULTS_URL" -e GITHUB_ACTIONS=true -e CI=true --entrypoint "/bin/bash" -v "/var/run/docker.sock":"/var/run/docker.sock" -v "/runner/_work/_temp/_github_home":"/github/home" -v "/runner/_work/_temp/_github_workflow":"/github/workflow" -v "/runner/_work/_temp/_runner_file_commands":"/github/file_commands" -v "/runner/_work/***/***":"/github/workspace" ubuntu:latest -c "echo /github/home/ && ls -al /github/home/"

Temp folder isn't mounted.