Example with mandatory variables not filled in

rougail:                      # Rougail
  variable1: '111'            # A port variable

Example with all variables modifiable

rougail:                      # Rougail
  variable1: '111'            # A port variable
  variable2: '8080'           # A port variable with default value
  variable3: '8080'           # A port variable with integer default value