diff --git a/src/rei3/constants-service.conf b/src/rei3/constants-service.conf
new file mode 100644
index 0000000..c941967
--- /dev/null
+++ b/src/rei3/constants-service.conf
@@ -0,0 +1,42 @@
+#!/bin/bash
+
+# Authors:
+# (C) 2021 Idea an concept by Christian Zengel <christian@sysops.de>
+# (C) 2021 Script design and prototype by Markus Helmke <m.helmke@nettwarker.de>
+# (C) 2021 Script rework and documentation by Thorsten Spille <thorsten@spille-edv.de>
+
+# This file contains the project constants on service level
+
+# Debian Version, which will be installed
+LXC_TEMPLATE_VERSION="debian-12-standard"
+
+# Create sharefs mountpoint
+LXC_MP="0"
+
+# Create unprivileged container
+LXC_UNPRIVILEGED="1"
+
+# enable nesting feature
+LXC_NESTING="1"
+
+
+# Defines the IP from the SQL server
+REI3_DB_IP="127.0.0.1"
+
+# Defines the PORT from the SQL server
+REI3_DB_PORT="5432"
+
+# Defines the name from the SQL database
+REI3_DB_NAME="app"
+
+# Defines the name from the SQL user
+REI3_DB_USR="rei3"
+
+# Build a strong password for the SQL user - could be overwritten with something fixed
+REI3_DB_PWD="$(random_password)"
+
+# Sets the minimum amount of RAM the service needs for operation
+LXC_MEM_MIN=4096
+
+# service dependent meta tags
+SERVICE_TAGS="postgresql"
diff --git a/src/rei3/install-service.sh b/src/rei3/install-service.sh
new file mode 100644
index 0000000..0d18b50
--- /dev/null
+++ b/src/rei3/install-service.sh
@@ -0,0 +1,42 @@
+#!/bin/bash
+
+# Authors:
+# (C) 2021 Idea an concept by Christian Zengel <christian@sysops.de>
+# (C) 2021 Script design and prototype by Markus Helmke <m.helmke@nettwarker.de>
+# (C) 2021 Script rework and documentation by Thorsten Spille <thorsten@spille-edv.de>
+
+source /root/functions.sh
+source /root/zamba.conf
+source /root/constants-service.conf
+
+mkdir /opt/rei3
+wget -c https://rei3.de/downloads/REI3_3.4.2_x64_linux.tar.gz -O - | tar -zx -C /opt/rei3
+
+wget -q -O - https://www.postgresql.org/media/keys/ACCC4CF8.asc | gpg --dearmor | sudo tee /etc/apt/trusted.gpg.d/postgres.gpg
+echo "deb http://apt.postgresql.org/pub/repos/apt $(lsb_release -cs)-pgdg main" | tee /etc/apt/sources.list.d/pgdg.list
+
+apt update
+
+DEBIAN_FRONTEND=noninteractive DEBIAN_PRIORITY=critical apt -y -qq dist-upgrade
+DEBIAN_FRONTEND=noninteractive DEBIAN_PRIORITY=critical apt -y -qq install --no-install-recommends postgresql imagemagick ghostscript postgresql-client
+
+timedatectl set-timezone ${LXC_TIMEZONE}
+
+systemctl enable --now postgresql
+
+su - postgres <<EOF
+psql -c "CREATE USER ${REI3_DB_USR} WITH PASSWORD '${REI3_DB_PWD}';"
+psql -c "CREATE DATABASE ${REI3_DB_NAME} ENCODING UTF8 TEMPLATE template0 OWNER ${REI3_DB_USR};"
+psql -c "GRANT ALL PRIVILEGES ON DATABASE ${REI3_DB_NAME} TO ${REI3_DB_USR};"
+echo "Postgres User ${REI3_DB_USR} and database ${REI3_DB_NAME} created."
+EOF
+
+cp /opt/rei3/config_template.json /opt/rei3/config.json
+chmod u+x /opt/rei3/r3
+
+sed -i 's/"user": "app",/"user": "'${REI3_DB_USR}'",/g' /opt/rei3/config.json 
+sed -i 's/"pass": "app",/"pass": "'${REI3_DB_PWD}'",/g' /opt/rei3/config.json 
+
+/opt/rei3/r3 -install
+#/opt/rei/r3 -newadmin
+systemctl start rei3