{
    "@id": "{{ stack_name }}_upstream",
{% if server_domain is not undefined and not none %}   
    "match": [
        {
            "host": [
{% if subdomain_alias is not undefined and not none %}
                "{{ subdomain_alias }}.{{ server_domain }}"
{% else %}
                "{{ stack_name }}.{{ server_domain }}"
{% endif %}
            ]
        }
    ],
{% else %}
    "match": [
        {
            "path": [
{% if subdomain_alias is not undefined and not none %}
                "/{{ subdomain_alias }}*"
{% else %}
                "/{{ stack_name }}*"
{% endif %}
            ]
        }
    ],
{% endif %}
    "handle": [
        {
            "handler": "reverse_proxy",
            "upstreams": [
                {
                    "dial": "{{ stack_name }}_app:3000"
                }
            ]
        }
    ]
}