Add descriptive tags to republished containers

[damccorm]

This will make identifying things easier. Also tweaked the workflow since it was failing

Example test run: https://github.com/apache/beam/actions/runs/12585577995/job/35077661479 (failing partway through because of unrelated docker issues I'm also looking at)

Example container created: https://pantheon.corp.google.com/artifacts/docker/apache-beam-testing/us/gcr.io/updated_released_container_images%2Fbeam_flink1.17_job_server?e=13802955&mods=-ai_platform_fake_service

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[damccorm]

assign set of reviewers

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