[BUG] x-elbv2 throws validation error using environment variable to set Service port

[dfrank-a]

Using docker run and the latest image, the relevant snippet of my docker-compose file is:

x-elbv2:
  testALB:
    Properties:
      Scheme: internal
      Type: application
      LoadBalancerAttributes:
        deletion_protection.enabled: "false"
    MacroParameters:
      Ingress:
        ExtSources:
          - IPv4: 0.0.0.0/0
            Name: ANY
            Description: "ANY"
    Listeners:
      - Port: 80
        Protocol: HTTP
        DefaultActions:
          - Redirect: HTTP_TO_HTTPS
      - Port: 443
        Protocol: HTTPS
        Certificates:
          - CertificateArn: REDACTED
        Targets:
          - name: family:service
            access: service.com/
    Services:
      'family:service': 
        port: ${FAMILY_SERVICE_PORT}
        protocol: HTTP
        healthcheck: ${FAMILY_SERVICE_PORT}:HTTP:7:2:15:5:/health_check/:200

And .env containing:

FAMILY_SERVICE_PORT=8080

2024-09-03 17:53:39 [   ERROR] elbv2.testALB - Definition is not conform to schema.
Traceback (most recent call last):
  File "/usr/local/bin/ecs-compose-x", line 8, in <module>
    sys.exit(main())
  File "/usr/local/lib/python3.10/site-packages/ecs_composex/cli.py", line 206, in main
    root_stack = generate_full_template(settings)
  File "/usr/local/lib/python3.10/site-packages/ecs_composex/ecs_composex.py", line 248, in generate_full_template
    settings.mod_manager.init_mods_resources(settings)
  File "/usr/local/lib/python3.10/site-packages/ecs_composex/mods_manager.py", line 307, in init_mods_resources
    module.set_resources(settings)
  File "/usr/local/lib/python3.10/site-packages/ecs_composex/mods_manager.py", line 266, in set_resources
    new_definition = self.resource_class(
  File "/usr/local/lib/python3.10/site-packages/ecs_composex/elbv2/elbv2_stack/elbv2.py", line 75, in __init__
    super().__init__(name, definition, module, settings)
  File "/usr/local/lib/python3.10/site-packages/ecs_composex/compose/x_resources/network_x_resources.py", line 37, in __init__
    super().__init__(name, definition, module, settings)
  File "/usr/local/lib/python3.10/site-packages/ecs_composex/compose/x_resources/services_resources.py", line 39, in __init__
    super().__init__(name, definition, module, settings)
  File "/usr/local/lib/python3.10/site-packages/ecs_composex/compose/x_resources/__init__.py", line 79, in __init__
    self.validate_schema(name, definition, module.mod_key)
  File "/usr/local/lib/python3.10/site-packages/ecs_composex/compose/x_resources/__init__.py", line 191, in validate_schema
    _eval.validate(definition)
  File "/usr/local/lib/python3.10/site-packages/jsonschema/validators.py", line 451, in validate
    raise error
jsonschema.exceptions.ValidationError: '8080' is not of type 'integer'