Using Caddy and Docker Compose for easy deployment

Caddyfile

gitlab:80 {
    proxy / gitlabsvc:80 {
        proxy_header Host {host}
        proxy_header X-Forwarded-Proto {scheme}
        proxy_header X-Real-IP {remote}
    }
}
wiki:80 {
    proxy / wikisvc:8090 {
        proxy_header Host {host}
        proxy_header X-Forwarded-Proto {scheme}
        proxy_header X-Real-IP {remote}
    }
}
jira:80 {
    proxy / jirasvc:8080 {
        proxy_header Host {host}
        proxy_header X-Forwarded-Proto {scheme}
        proxy_header X-Real-IP {remote}
    }
}

docker-compose.yml

version: '2'
services:
  gitlabsvc:
    image: gitlab/gitlab-ce
    networks:
      - gitlab
      - front
    ports:
    - "22:22"
    volumes:
    - /var/gitlab/config:/etc/gitlab
    - /var/gitlab/logs:/var/log/gitlab
    - /var/gitlab/data:/var/opt/gitlab
  db:
    image: sameersbn/postgresql
    networks:
      - atlassian
    volumes:
    - /var/atlassian/postgres:/var/lib/postgresql
    environment:
    - DB_USER=atlassian
    - DB_PASS=atlassian
    - DB_NAME=jira,confluence
  wikisvc:
    image: cptactionhank/atlassian-confluence
    networks:
      - atlassian
    volumes:
    - /var/atlassian/confluence:/var/atlassian/confluence
  jirasvc:
    image: cptactionhank/atlassian-jira-service-desk
    networks:
      - atlassian
    volumes:
    - /var/atlassian/jira:/var/atlassian/jira
  caddy:
    build: proxy/
    networks:
      - atlassian
      - gitlab
      - front
    ports:
    - "80:80"
    - "443:443"
    volumes:
    - /var/proxy/data/caddy:/root/.caddy
    - /var/proxy/data/html:/var/www/html
networks:
  front:
  atlassian:
  gitlab:

Nice, but try replacing all the proxy_header lines (which is now deprecated) with the transparent preset.