ci: publish image for testservice [WPB-21987]

[markbrockhoff]

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PR Submission Checklist for internal contributors

• The PR Title

  • conforms to the style of semantic commits messages¹ supported in Wire's Github Workflow²
  • contains a reference JIRA issue number like SQPIT-764
  • answers the question: If merged, this PR will: ... ³

• The PR Description

  • is free of optional paragraphs and you have filled the relevant parts to the best of your ability

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What's new in this PR?

Issues

The e2e tests of the wire webapp use the testservice in some test cases. Currently it manually builds it for each test execution.

Solutions

To save on CI time and resources a docker image with the prebuilt testservice should be published for others to just consume.

Testing

How to Test

You can build and run the new docker image on your system using the following commands:

docker build -t testservice -f ./tools/testservice/Dockerfile .
docker run -p 8080:8080 -p 8081:8081 testservice

Notes (Optional)

The PR is currently set up to execute the new Workflow for the PR. This is to test it before merging. Once it ran once successfully I'll remove the pull_request trigger.

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PR Post Submission Checklist for internal contributors (Optional)

• Wire's Github Workflow has automatically linked the PR to a JIRA issue

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PR Post Merge Checklist for internal contributors

• If any soft of configuration variable was introduced by this PR, it has been added to the relevant documents and the CI jobs have been updated.

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References

1. https://sparkbox.com/foundry/semantic_commit_messages
2. https://github.com/wireapp/.github#usage
3. E.g. feat(conversation-list): Sort conversations by most emojis in the title #SQPIT-764.

[CLAassistant]

Thank you for your submission! We really appreciate it. Like many open source projects, we ask that you sign our Contributor License Agreement before we can accept your contribution.
_{You have signed the CLA already but the status is still pending? Let us recheck it.}

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud

[markbrockhoff]

PR was closed in favor of #3759 since I'm not able to run CI for a PR from a fork