New job to manually make docker image of chosen commit

[JkLondon]

Rationale

Some platforms, like EthPandaOps tests, work exclusively with Docker images. When I need to fix something, I cannot test it directly until I create an image from my commit and publish it on DockerHub, or until it is merged into the main branch.

My proposal is to create a job that any developer (starting with the Erigon Team) can trigger. This job would:

Create a Docker image from a specific commit (entered manually). The image would be automatically deleted after n days to conserve storage space.
Enforce a usage limit per user to prevent overuse (for example, allowing 2-3 jobs per day, or whatever is deemed suitable).
I believe this should not be automated, as the developer should take full responsibility for the commit they choose to create an image from.

[JkLondon]

@lystopad