Dear Marcel,
I tried installing DICOM server 1.4.19b on Ubuntu Server 16.04.04, but showed an error: did not found dgatesmall. It looks like the file is not in the zip.
Before i forget, I had trouble starting Conquest automatically with the system with the Linux manual guidelines.
I looked for the cause of the problem and noticed that the script to start Conquest need the following lines on the top:
#!/bin/bash
HOME=/root
LOGNAME=root
PATH=/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin
LANG=en_US.UTF-8
SHELL=/bin/sh
PWD=/root
Wtih this I put the script (conquest.sh) in the folder /etc/init.d, gave the command: chmod +x /etc/init.d/conquest.sh and chmod 755 /etc/init.d/conquest.sh, and after that: update-rc.d conquest.sh defaults.
Now, Conquest started to boot with the system.
Hope this helps.