towards healthchecks for all containers

compose.openvpn-server.yaml

@@ -1,11 +1,11 @@
 services:
   openvpn-server:
+    image: kylemanna/openvpn:2.4
+    container_name: openvpn-server
     cap_add:
       - NET_ADMIN
-    container_name: openvpn-server
     extra_hosts:
       - "host:${HOST_IP}"
-    image: kylemanna/openvpn:2.4
     ports:
       - 444:443
     privileged: true
@@ -13,3 +13,8 @@ services:
     volumes:
       - /opt/openvpn-server:/etc/openvpn
       - /opt/openvpn-server/logrotate.d/openvpn:/etc/logrotate.d/openvpn
+    healthcheck:
+      test: ["CMD-SHELL", "ip link show tun0 || exit 1"]
+      interval: 30s
+      timeout: 5s
+      retries: 3