We use the Docker Hub Workflow to build and push
our images to Docker Hub, but to check if we
have vulnerabilities in our images as well.
When we are just checking for vulnerabilities,
we don't need to do all the builing steps.
This commit optimizes the workflow by only doing the
necessary steps when we are just checking for
vulnerabilities, so during pull requests we skip the build
steps, and we do not activate QEMU and buildx
Replace custom Docker Hub authentication with standard, secure,
official GitHub actions for improved security and maintainability.
Uses officially supported actions that follow security best practices
and receive regular updates from GitHub.
Avoid unsecure handling of GitHub secrets.
Manuel Raynaud