first try

.env.sample

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+TYPE=grafana
+
+DOMAIN=grafana.example.com
+LETS_ENCRYPT_ENV=production

compose.yml

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+---
+version: "3.8"
+
+services:
+  app:
+    image: grafana/grafana:8.4.3
+    networks:
+      - proxy
+    volumes:
+      - app:/var/lib/grafana
+    deploy:
+      update_config:
+        failure_action: rollback
+        order: start-first
+      labels:
+        - "traefik.enable=true"
+        - "traefik.docker.network=proxy"
+        - "traefik.http.services.${STACK_NAME}_web.loadbalancer.server.port=3000"
+        - "traefik.http.routers.${STACK_NAME}_web.rule=Host(`${DOMAIN}`)"
+        - "traefik.http.routers.${STACK_NAME}_web.entrypoints=web-secure"
+        - "traefik.http.routers.${STACK_NAME}_web.tls.certresolver=${LETS_ENCRYPT_ENV}"
+        - "coop-cloud.${STACK_NAME}.version=0.0.1+8.4.3"
+
+
+networks:
+  proxy:
+    external: true
+
+volumes:
+ app: