Implement proper continues delivery and deployment tools

[mlech-reef]

It could be invoke+fabric2. More advanced mechanisms, which are not needed in our opinion, are e.g. ansible or salt.

Requirements:

• The deployment should allow pushing the image to the server without having container registry.
• There should be no need to have a source code on the VM.
• It should work on freshly installed Ubuntu LTS systems. All dependencies should be automatically installed if needed.
• It should allow deploying manually and via GitHub Actions by using the same tools.