Docs feedback: recommended tetraweb/php is broken
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Affected docs pages:
* [Running Composer and NPM scripts with deployment via SCP in GitLab CI/CD \| GitLab](https://docs.gitlab.com/ee/ci/examples/deployment/composer-npm-deploy.html)
* Probably others too
The mentioned docker image [tetraweb/php](https://hub.docker.com/r/tetraweb/php/) currently is broken ([\[Critical\] debian repositories broken · Issue \#64 · TetraWeb/docker](https://github.com/TetraWeb/docker/issues/64), Forum: [Gitlab runners stopped working \- Questions & Answers / GitLab CI \- GitLab Forum](https://forum.gitlab.com/t/gitlab-runners-stopped-working/24958/7)).
We should fix this or settle on a robust replacement.
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