anchor.diff:            name    => new_node4,
             peers   => [new_node3],
             backend => aest_docker,
  -          source  => {pull, "aeternity/epoch:v0.11.0"},
  +          source  => {pull, ?TESTED_DOCKER_IMAGE},
             mine_rate => default,
             hard_forks => ?PROTOCOLS(H)
            }).
  
positive.code:           name    => new_node1,
            peers   => [],
            backend => aest_docker,
            source  => {pull, "aeternity/epoch:v0.11.0"},
            mine_rate => default,
            hard_forks => ?PROTOCOLS(H)
           }).
  
negative.code:           name    => new_node2,
            peers   => [new_node1],
            backend => aest_docker,
            source  => {pull, ?TESTED_DOCKER_IMAGE},
            mine_rate => default,
            hard_forks => ?PROTOCOLS(H)
           }).
  