Use {{ DOMAIN }} var

docker-compose.yml.j2

@@ -7,7 +7,7 @@ services:
     - 9090:9090
     command:
     - --config.file=/etc/prometheus/prometheus.yml
-    - --web.external-url=https://monitor.potato.com
+    - --web.external-url=https://monitor.{{ DOMAIN }}
     volumes:
     - ./config/:/etc/prometheus/
     depends_on:
@@ -20,7 +20,7 @@ services:
       - "traefik.enable=true"
       - "traefik.docker.network=prometheus_network"
       - "traefik.http.routers.prometheus.entrypoints=web_secure"
-      - "traefik.http.routers.prometheus.rule=Host(`monitor.potato.com`)"
+      - "traefik.http.routers.prometheus.rule=Host(`monitor.{{ DOMAIN }}`)"
       - "traefik.http.routers.prometheus.tls.certresolver=certresolver"
       - "traefik.http.routers.prometheus.middlewares=authelia@docker"
 
@@ -49,7 +49,7 @@ services:
     command:
     - --cluster.advertise-address={{ ansible_default_ipv4.address }}:9093
     - --config.file=/etc/prometheus/alertmanager.yml
-    - --web.external-url=https://monitor.potato.com
+    - --web.external-url=https://monitor.{{ DOMAIN }}
     volumes:
     - ./config/alertmanager.yml:/etc/prometheus/alertmanager.yml
     restart: unless-stopped
@@ -97,7 +97,7 @@ services:
       - "traefik.docker.network=prometheus_network"
       - "traefik.http.routers.grafana.entrypoints=web_secure"
       - "traefik.http.services.grafana.loadbalancer.server.port=3000"
-      - "traefik.http.routers.grafana.rule=Host(`flight.potato.com`)"
+      - "traefik.http.routers.grafana.rule=Host(`flight.{{ DOMAIN }}`)"
       - "traefik.http.routers.grafana.tls.certresolver=certresolver"
       - "traefik.http.routers.grafana.middlewares=authelia@docker"