add DockerHub overview update workflow

[rajyan]

fixes rectorphp/rector#6457

tested
rectorphp/rector#6457 (comment)

Requires DockerHub password to run, and I believe this is the only way to update overview constantly with a path other than README.md.

[rajyan]

@TomasVotruba
ready for review!

[TomasVotruba]

Thanks 👍

[samsonasik]

It seems need token? https://github.com/rectorphp/rector/runs/2865521242#step:5:1

with:
   username: ***
    password: ***
    repository: rector/rector
    readme-filepath: ./docs/how_to_run_rector_in_docker.md
  env:
    COMPOSER_ROOT_VERSION: dev-main
Acquiring token
Sending PATCH request

Error: FORBIDDEN

[rajyan]

@TomasVotruba @samsonasik
https://github.com/rectorphp/rector/actions/runs/952762137
😢
This means that secrets.DOCKER_PASSWORD uses a PAT (which is recommended and I think better). Maybe no way to update it automatically.

We have to wait for DockeHub API to solve this problem…
Or changing DOCKER_PASSWORD secret to password until it’s fixed?

[samsonasik]

@rajyan could you update to:

        username: ${{ secrets.DOCKERHUB_USERNAME }}
        password: ${{ secrets.DOCKERHUB_PASSWORD }}

to new PR? @TomasVotruba may need to insert to secrets to allow get the docker hub password, is it?

[rajyan]

@samsonasik
Isn’t DOCKER_USERNAME===DOCKEHUB_USERNAME？
@TomasVotruba
I think It’s just a security decision whether using dockerhub password to login or not. (That is replacing DOCKER_PASSWORD from pesonal access token to "password")
If it’s not applicable, I think we have to revert this PR.

[samsonasik]

@rajyan should be it is

[samsonasik]

@rajyan could you create 2 PRs alternative?:

1. PR that Revert this
2. PR that use different secret variable like secrets.DOCKERHUB_PASSWORD so @TomasVotruba can insert the docker hub password in the github repo settings.

thank you.

[rajyan]

@samsonasik @TomasVotruba
I created the 2 PRs!
There are 3 ways to fix.

1. Changing secret name to DOCKERHUB_PASSWORD and adding a new secret change secret name #255
2. Just revert Revert "add DockerHub overview update workflow (#249)" #254
3. Replacing DOCKER_PASSWORD with a password and rerunning the workflow