element-docker-demo/data-template/nginx/www/.well-known/matrix/support

{
    "support_page": "https://matrix.org/contact/",
    "contacts": [
        { "role": "m.role.admin", "email_address": "${ABUSE_SUPPORT_EMAIL}" },
        { "role": "m.role.security", "email_address": "${SECURITY_SUPPORT_EMAIL}" }
    ]
}