Index: README.md
===================================================================
--- README.md	(revision 1663)
+++ README.md	(revision 1705)
@@ -31,4 +31,5 @@
 * [Source code](https://github.com/robcast/digilib)
 * [Issue tracker](https://github.com/robcast/digilib/issues)
+* [Docker images](https://hub.docker.com/r/robcast/digilib)
 * Daily built [WAR files](https://it-dev.mpiwg-berlin.mpg.de/downloads/digilib/daily-build/)
 * Daily built [Javadoc](https://it-dev.mpiwg-berlin.mpg.de/downloads/digilib/daily-build/javadoc/)
@@ -59,5 +60,5 @@
    `mvn jetty:run-exploded --projects webapp`
    
-   and watch digilib at http://localhost:8080/digilib/digilib.html
+   and open http://localhost:8080/digilib/digilib.html in your browser.
 
 or follow the build and install instructions on the [documentation pages](https://robcast.github.io/digilib/).
Index: build/docker/Dockerfile
===================================================================
--- build/docker/Dockerfile	(revision 1703)
+++ build/docker/Dockerfile	(revision 1705)
@@ -3,5 +3,7 @@
 WORKDIR /usr/src/digilib
 COPY . /usr/src/digilib/
-RUN mvn package
+ARG MVN_ARGS
+# build digilib using maven
+RUN mvn $MVN_ARGS package
 # remove the war file so we don't copy it in the next stage
 RUN rm /usr/src/digilib/webapp/target/digilib-webapp-*.war
@@ -9,6 +11,11 @@
 # runnable container stage
 FROM tomcat:9-jre11 AS runstage
-# remove tomcat default webapps
-RUN rm -r /usr/local/tomcat/webapps/*
+# copy entry script
+COPY build/docker/entrypoint.sh /entrypoint.sh
+# remove tomcat default webapps and set entrypoint
+RUN rm -r /usr/local/tomcat/webapps/* \
+	&& chmod 755 /entrypoint.sh
 # copy digilib from build image
 COPY --from=buildstage /usr/src/digilib/webapp/target/digilib-webapp-* /usr/local/tomcat/webapps/digilib/
+
+ENTRYPOINT ["/entrypoint.sh"]
Index: build/docker/README.md
===================================================================
--- build/docker/README.md	(revision 1705)
+++ build/docker/README.md	(revision 1705)
@@ -0,0 +1,91 @@
+# digilib
+
+![digilib-logo](https://robcast.github.io/digilib/images/digilib-logo-big.png)
+
+A Docker container for the [digilib image server](https://robcast.github.io/digilib/).
+
+digilib is a [IIIF API](https://iiif.io) compliant image server written in Java:
+  * Documentation: https://robcast.github.io/digilib/
+  * Issues: https://github.com/robcast/digilib/issues
+  * Source code: https://github.com/robcast/digilib
+
+## Supported tags
+
+  * **release-x.y.z**: Tagged release builds.
+  * **snapshot**: unstable daily builds from the `master` branch.
+
+## Dependencies
+
+The digilib runtime image builds on the [tomcat:9-jre11](https://hub.docker.com/_/tomcat) image.
+
+## How to use this image
+
+Quick try-out using built-in images:
+```
+docker run --rm -p 8080:8080 robcast/digilib
+```
+Then open https://localhost:8080/digilib/digilib.html in your browser.
+
+To use your own images in the directory `/your/image/path` on your host system:
+```
+docker run --rm \
+	-p 8080:8080 \
+    --name digilib \
+    -e BASEDIR_LIST="/var/lib/images" \
+    -v /your/image/path:/var/lib/images \
+    robcast/digilib
+```
+
+## Available parameters for the container
+
+You can set the values of the most important digilib configuration parameters as environment variables 
+using the `-e` option of `docker run`. For more information check the 
+[digilib-config documentation](https://robcast.github.io/digilib/digilib-config.html).
+
+  * BASEDIR_LIST: The list of directories where images are searched.
+
+  * DEFAULT_QUALITY: The default interpolation quality (0: do not use interpolation (worst),
+  1: use linear interpolation,
+  2: use bilinear interpolation and blur-before-scale (best, default))
+
+  * MAX_IMAGE_SIZE: The maximum size of delivered images as pixel area, 40000 means up to 200x200 or 100x400, 
+0 (default) means no limit.
+    
+  * SENDFILE_ALLOWED: Is sending whole image files with mo=file allowed (default: "true")?
+
+  * WORKER_THREADS: Number of parallel working threads (default: 2).
+
+  * MAX_WAITING_THREADS: Maximum number of waiting requests in queue (default: 20).
+
+  * IIIF_PREFIX: The URL prefix (after Scaler) that leads to the IIIF API (default: "IIIF")
+
+## Using your own `digilib-config.xml`
+
+If you need more control over your [digilib configuration](https://robcast.github.io/digilib/digilib-config.html)
+then you can supply your own `digilib-config.xml` file by mounting it
+to `/usr/local/tomcat/webapps/digilib/WEB-INF/digilib-config.xml` in the container:
+```
+docker run --rm \
+	-p 8080:8080 \
+    --name digilib \
+    -v digilib-config.xml:/usr/local/tomcat/webapps/digilib/WEB-INF/digilib-config.xml
+    -v /your/image/path:/var/lib/images \
+    robcast/digilib
+```
+
+Note: when you use your own config file you can not use the predefined parameters described above.
+
+## Building your own container image
+
+You can build your own digilib container image from the digilib sources:
+```
+git clone https://github.com/robcast/digilib.git
+cd digilib
+docker build -f build/docker/Dockerfile -t mydigilib:latest .
+```
+
+You can supply additional options to Maven during the build process using the `MVM_ARGS` build parameter:
+```
+docker build -f build/docker/Dockerfile -t mydigilib:latest --build-arg MVN_ARGS="-Piiif-presentation" .
+```
+See the [digilib build documentation](https://robcast.github.io/digilib/build-maven.html) for more information.
Index: build/docker/entrypoint.sh
===================================================================
--- build/docker/entrypoint.sh	(revision 1705)
+++ build/docker/entrypoint.sh	(revision 1705)
@@ -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
