--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/build/docker/entrypoint.sh	Mon Feb 18 18:32:15 2019 +0100
@@ -0,0 +1,35 @@
+#!/bin/sh
+
+DL_CONFIG=webapps/digilib/WEB-INF/digilib-config.xml
+
+if [ ! -f $DL_CONFIG ] ; then
+# generate digilib config using ENV
+cat <<EOF > $DL_CONFIG
+<?xml version="1.0" encoding="UTF-8"?>
+<digilib-config>
+    <!-- A list of directories where images are searched -->
+    <parameter name="basedir-list" value="${BASEDIR_LIST:-/usr/local/tomcat/webapps/digilib/sample-images}" />
+    
+    <!-- The default interpolation quality (0-2). -->
+    <parameter name="default-quality" value="${DEFAULT_QUALITY:-2}" />
+
+    <!-- The maximum size of delivered images as pixel area, 40000 means up to 200x200 or 100x400, 0 means no limit. -->
+    <parameter name="max-image-size" value="${MAX_IMAGE_SIZE:-0}" />
+    
+  	<!-- is sending whole image files with mo=file allowed? -->
+  	<parameter name="sendfile-allowed" value="${SENDFILE_ALLOWED:-true}" />
+
+  	<!-- number of working threads -->
+  	<parameter name="worker-threads" value="${WORKER_THREADS:-2}" />
+
+  	<!-- number of waiting requests in queue -->
+  	<parameter name="max-waiting-threads" value="${MAX_WAITING_THREADS:-20}" />
+
+    <!-- The prefix (after Scaler) that leads to the IIIF API.-->    
+    <parameter name="iiif-prefix" value="${IIIF_PREFIX:-IIIF}" />
+</digilib-config>
+EOF
+fi
+
+# run the command given in the origin Dockerfile at CMD 
+exec catalina.sh run