Automate image creation

We should have a script that builds all the images and pushes them to docker hub automatically.

We can then have this as a CI job, however we should be careful about this and not push images if anything fails, otherwise it will stop the development.

So maybe we can push with a `dev` tag and create a PR where we use `dev` tagged images to manually check if all tests pass.

For now the script part is more important than the periodic runs.