Docker: Push image on docker hub

[Zerka30]

Description: Once we have successfully built the Docker image for KumaCompanion, the next step is to push the image to Docker Hub. Docker Hub is a cloud-based registry service that allows us to store and share Docker images with others. By pushing the KumaCompanion Docker image to Docker Hub, we can make it publicly available for other users to pull and use.

To accomplish this task, we need to follow these steps:

1. Tag the locally built Docker image with the appropriate repository name and version/tag.
2. Log in to Docker Hub using the appropriate credentials to gain access to the repository.
3. Push the tagged Docker image to the Docker Hub repository.
4. By pushing the image to Docker Hub, we can make it easily accessible to the community and streamline the process of sharing and distributing KumaCompanion in a containerized form.