diff --git a/seqs/onlyoffice.cfg.example b/seqs/onlyoffice.cfg.example
new file mode 100644
index 0000000..5ebf5ec
--- /dev/null
+++ b/seqs/onlyoffice.cfg.example
@@ -0,0 +1,6 @@
+#!/bin/bash
+
+onlyOfficePort="8026"
+dockerDns1="80.241.218.68" # https://dismail.de/info.html#dns
+dockerDns2="46.182.19.48" # https://digitalcourage.de/support/zensurfreier-dns-server
+dockerDefaultConf="/etc/default/docker"
diff --git a/seqs/onlyoffice.sh b/seqs/onlyoffice.sh
index dd6dd21..49eb0c4 100755
--- a/seqs/onlyoffice.sh
+++ b/seqs/onlyoffice.sh
@@ -12,11 +12,27 @@ dockerDeps="apt-transport-https ca-certificates curl gnupg-agent software-proper
 dockerGpgKeyUrl="https://download.docker.com/linux/ubuntu/gpg"
 dockerRepoUrl="https://download.docker.com/linux/ubuntu"
 dockerPackages="docker-ce docker-ce-cli containerd.io"
-dockerDns1="80.241.218.68" # https://dismail.de/info.html#dns
-dockerDns2="46.182.19.48" # https://digitalcourage.de/support/zensurfreier-dns-server
+# Entry in config value $dockerDefaultConf
 dockerDnsEntry="DOCKER_OPTS=\"--dns $dockerDns1 --dns $dockerDns2\""
-dockerDefaultConf="/etc/default/docker"
-onlyOfficePort="8026"
+
+# Get script working directory
+# (when called from a different directory)
+WDIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" >>/dev/null 2>&1 && pwd )"
+CONFIG_FILE="$WDIR/${toolName}.cfg"
+CONFIG_FILE_DEFAULT="${CONFIG_FILE}.example"
+
+step_config() {
+  if [ ! -s "$CONFIG_FILE" ] && [ ! -s "$CONFIG_FILE_DEFAULT" ] ; then
+    echoerr " [E] No configuration \"$CONFIG_FILE_DEFAULT\" or \"$CONFIG_FILE\" found"
+    exit 1;
+  fi
+  if [ -s "$CONFIG_FILE" ] ; then
+    . "$CONFIG_FILE"
+  else
+    echoerr " [W] User configuration \"$CONFIG_FILE\" not found. Using \"$CONFIG_FILE_DEFAULT\""
+    . "$CONFIG_FILE_DEFAULT"
+  fi
+}
 
 step_1_info() { echo "Install docker dependencies"; }
 step_1_alias() { ALIAS="install"; }