Add packages workflow to build and push images

[lukasleitsch]

Adds a workflow for GitHub Actions to build and push the images to the GitHub container Registry and Docker Hub.

Please review and merge the PR #79 first. This PR already includes the new image.

You have to set up the secrets DOCKERHUB_USERNAME and DOCKERHUB_TOKEN that the action can log in to your Docker Hub account.

Currently, only the tags 7.3, 7.4, 8.0 and 8.1 will be pushed.

[lorisleiva]

Thanks for that! I've got a few questions:

• Are the DOCKERHUB_* variables simply my actual username and password or do I need to generate some sort of API token on DockerHub?
• Is the GITHUB_TOKEN variable automatically availble?
• Can we also support the stable and latest tags (on top of 8.1, 8.0, etc.)? latest should refer to the latest version available (currently, 8.1) and stable should refer to the latest version that has every dependency needed by the image (currently, 8.1 as well by the looks of it).

[lukasleitsch]

• Are the DOCKERHUB_* variables simply my actual username and password or do I need to generate some sort of API token on DockerHub?

I guess no. Please have a look to this page: https://docs.docker.com/docker-hub/access-tokens/

• Is the GITHUB_TOKEN variable automatically availble?

Yes.

• Can we also support the stable and latest tags (on top of 8.1, 8.0, etc.)? latest should refer to the latest version available (currently, 8.1) and stable should refer to the latest version that has every dependency needed by the image (currently, 8.1 as well by the looks of it).

I updated the workflow. Due PHP 8.1 is not released yet, I would suggest to use PHP 8.0 for latest and stable

[lorisleiva]

Okay I've added the DOCKERHUB_* secrets on the repository so let's see if it works. 😊

[lorisleiva]

It worked beautifully! Thank you so much, that's going to be a massive help going forward! 🍻

[lukasleitsch]

Looks awesome. :)