Caused by: org.apache.http.conn.HttpHostConnectException: Connect to localhost:8081 [localhost/127.0.0.1] failed: Connection refused (Connection refused)

version: '2'

volumes:
  data-jenkins:
    driver: 'local'
  data-postgres:
    driver: 'local'
  data-sonarqube-conf:
    driver: 'local'
  data-sonarqube-data:
    driver: 'local'
  data-archiva:
    driver: 'local'

services:
  jenkins:
    image: 'jenkins'
    ports:
      - '8080:8080'
    restart: 'always'
    volumes:
      - 'data-jenkins:/var/jenkins_home'
    links:
      - 'sonarqube:sonarqube'
  postgres:
    image: 'postgres:9.6.1'
    environment:
      - 'POSTGRES_USER=postgres'
      - 'POSTGRES_PASSWORD=postgres'
    ports:
      - '5432:5432'
    restart: 'always'
    volumes:
      - 'data-postgres:/var/lib/postgresql/data'
  sonarqube:
    image: 'sonarqube'
    depends_on:
      - 'postgres'
    ports:
      - '9000:9000'
    links:
      - 'postgres:postgres'
    environment:
      - 'SONARQUBE_JDBC_URL=jdbc:postgresql://postgres:5432/'
      - 'SONARQUBE_JDBC_USERNAME=postgres'
      - 'SONARQUBE_JDBC_PASSWORD=postgres'
    volumes:
      - 'data-sonarqube-data:/var/lib/sonarqube/data'
      - 'data-sonarqube-conf:/var/lib/sonarqube/conf'
  archiva:
    image: 'xetusoss/archiva'
    ports:
      - '8081:8080'
    volumes:
      - 'data-archiva:/var/archiva'
    environment:
      - 'SSL_ENABLED=false'