feat(docker-compose): Add example for health check between two services

docker-compose/examples/grafana/docker-compose.yml

@@ -5,6 +5,9 @@ services:
         networks:
             grafana-default:
         profiles: ["full", "grafana"]
+        depends_on:
+            nginx:
+                condition: service_healthy
         extends:
             file: common-settings.yml
             service: common-settings
@@ -23,6 +26,12 @@ services:
         networks:
             grafana-default:
         profiles: ["full", "nginx"]
+        healthcheck:
+            test: ["CMD", "fping", "--count=1", "${GRAFANA_VIP}", "--period=500", "--quiet"]
+            interval: 3s
+            timeout: 1s
+            retries: 60
+            start_period: 2s
         extends:
             file: common-settings.yml
             service: common-settings

docker-compose/examples/grafana/env/fqdn_context.env.example

@@ -6,6 +6,7 @@ CONTEXT=cncf
 # ---
 # GRAFANA_VERSION=x.y.z
 # NGINX_VERSION=x.y.z
+# GRAFANA_VIP=10.1.1.2