Preparing the system for alerts

We'll deploy the stack defined in stacks/jenkins.yml (https://github.com/vfarcic/docker-flow-monitor/blob/master/stacks/jenkins.yml). The definition is as follows.

version: '3.1'

services:

  master:
    image: vfarcic/jenkins
    ports:
      - 50000:50000
    environment:
      - JENKINS_OPTS="--prefix=/jenkins"
    networks:
      - proxy
      - default
   deploy:
     labels:
       - com.df.notify=true
       - com.df.distribute=true
       - com.df.servicePath=/jenkins
       - com.df.port=8080
   extra_hosts:
     - "${SLACK_HOST:-devops20.slack.com}:${SLACK_IP:-54.192.78.227}"
   secrets:
     - jenkins-user
     - jenkins-pass

agent:
  image: vfarcic/jenkins-swarm-agent
  environment:
    - USER_NAME_SECRET=/run/secrets/${JENKINS_USER_SECRET:-\
jenkins-user}
    - PASSWORD_SECRET=/run/secrets/${JENKINS_PASS_SECRET:-\
jenkins-pass...