update to push to GCHR

[lambaaryan011]

Pull Request

Description

This PR updates the GitHub Actions workflow to push Docker images to GitHub Container Registry (GHCR) instead of Docker Hub.

Changes include:

⇾ Updating push-docker.yml to use ghcr.io as the registry
⇾ Replacing Docker Hub login credentials with GitHub credentials (GITHUB_TOKEN)
⇾ Updating image tags to follow GHCR naming conventions
Fixes #69

How Has This Been Tested?

The workflow was tested by triggering a test run in GitHub Actions:

⇾ Verified that the Docker image builds successfully
⇾ Checked that the image is pushed to GHCR (ghcr.io/openclimatefix/...)
⇾ Pulled the image locally to confirm it is accessible and usable

• Yes

If your changes affect data processing, have you plotted any changes? i.e. have you done a quick sanity check?

• Yes

Checklist:

• My code follows OCF's coding style guidelines
• I have performed a self-review of my own code
• I have made corresponding changes to the documentation
• I have added tests that prove my fix is effective or that my feature works
• I have checked my code and corrected any misspellings

[lambaaryan011]

@peterdudfield have a look

[peterdudfield]

@devsjc would you be able to look at this? Thanks

[lambaaryan011]

Hi @devsjc @peterdudfield ,

Just following up on my PR. Could you please review it when you get a chance? Let me know if any changes are needed

[peterdudfield]

@devsjc you ok to review this?