[DO-1675] add zabanet env (#98)

chore: replace gcr with dockerhub (#86)

* chore: replace gcr with dockerhub

* use docker build and push action

* chore: update docker build and push action

Merge pull request #82 from radixdlt/DO-1394-rm-betanet

Remove betanet environment

Remove nodeSelectors from kisharnet and ansharnet (#75)

Changing hosts instead of kisharnet to rcnet (#76)

Adding checkout when there is release

Refactor Deployment workflow

Adding mainnet, ansharnet and kirshanet