[Instascale] Simplify image build, push, and deployment (all-in-one)

[ChristianZaccaria]

Name of Feature or Improvement

Simplify the build, push, and deployment of a custom image of Instascale in a K8s cluster.

Description of Problem the Feature Should Solve

Having to manually run several commands to achieve the above for development purposes can be time-consuming.

Describe the Solution You Would Like to See

There are several steps involved in achieving this. It would be best to have an all-in-one make target to simplify the process to use your own custom image of Instascale.