packager.io centos fixes

.pkgr.yml

@@ -2,9 +2,11 @@ notifications: false
 targets:
   centos-6:
     dependencies:
+      - nginx
       - postgresql-server
   centos-7:
     dependencies:
+      - nginx
       - postgresql-server
   debian-8:
     dependencies:
@@ -30,5 +32,4 @@ env:
   - PORT=3000
 services:
   - postgres
-before_install: contrib/packager.io/preinstall.sh
 after_install: contrib/packager.io/postinstall.sh

contrib/packager.io/preinstall.sh

@@ -1,14 +0,0 @@
-#!/bin/bash
-#
-# packager.io preinstall script
-#
-
-PATH=/opt/zammad/bin:/opt/zammad/vendor/bundle/bin:/sbin:/bin:/usr/sbin:/usr/bin:
-
-# install epel-release & nginx on centos because it does not work via dependencies
-if [ -n "$(which yum)" ]; then
-    yum install -y -q epel-release
-
-    yum install -y -q nginx
-fi
-