switch jenkins to BlueOcean builds and add healthcheck and Jenkinsfile.

not sure we can actually complete a pipeline deployment successfully, because of restart

dockerfiles/services/jenkins/docker-compose.yml

@@ -10,7 +10,8 @@ services:
   app:
 #    restart: always
 #    privileged: true
-    image: "jenkins/jenkins:lts"
+#    image: "jenkins/jenkins:lts"
+    image: "jenkinsci/blueocean"
 
     volumes:
       - jenkins_home:/var/jenkins_home
@@ -25,12 +26,23 @@ services:
       restart_policy:
         condition: any
         delay: "5s"
-        max_attempts: 1
+        max_attempts: 3
+      update_config:
+        parallelism: 1
+        delay: 2s
+        order: start-first
       resources:
         limits:
           cpus: '2'
           memory: 1536M
 
+    healthcheck:
+      test: ["CMD", "curl", "-f", "http://localhost:8080/metrics/ejkxeVI-iKLy968ji9AnfYmOHGIh1kYd3gA500JqrRxzTeenT06ynR5Dqo0CQplO/ping"]
+      interval: 1m30s
+      timeout: 10s
+      retries: 3
+      start_period: 3m
+
     logging:
       driver: fluentd
       options: