Makefile Improvements

[nemerna]

Below improvements can be helpful to exist in the makefile

• support dynamic container engine
• support non Static image tag for build
• add test rule
  • provision 2 keycloak servers locally
  • create test data in src server
  • export the test data from test src server
  • onboard groups to target server (maybe using kcm?)
  • import users exported in previous step
  • validate expected data was imported (helper scripts can be useful)