simple setup to start

node/malus/integrationtests/0001-dispute-valid-block-simple.feature

+Feature: Disputes
+
+  Scenario: Dispute Valid Block
+    Given a test network
+    Then alice is up
+    And alice reports substrate_node_roles is 4
+    And alice reports substrate_sub_libp2p_is_major_syncing is 0
+    When alice's best block should be above 1
+    Then alice reports block height is greater than 1
+    And alice reports peers count is at least 2
+    Then bob is up
+    And bob reports block height is greater than 30
+    And bob reports peers count is at least 2
+    Then charlie is up
+    And charlie reports block height is greater than 30
+    And charlie reports peers count is at least 2
+    And david reports peers count is at least 2

node/malus/integrationtests/0001-dispute-valid-block-simple.toml

+[settings.defaults]
+image = "parity/polkadot"
+command = "polkadot"
+chain-name = "polkadot-local"
+timeout = 1000
+
+[nodes.alice]
+validator = true
+extra-args = ["--alice"]
+image = "parity/polkadot"
+command = "polkadot"
+
+[nodes.bob]
+validator = true
+extra-args = ["--bob"]
+image = "parity/polkadot"
+command = "polkadot"
+
+[nodes.charlie]
+validator = true
+extra-args = ["--charlie"]
+image = "parity/polkadot"
+command = "polkadot"
+
+[nodes.mal]
+validator = true
+extra-args = ["--dave"]
+image = "paritypr/malus"
+command = "/usr/local/bin/malus-dispute-valid-block"