Add readme to start examole image

Change-Id: Iafbc3ad8831e2f751ae699abbae3baec0c14770e
diff --git a/Readme.md b/Readme.md
index 551a67b..871cad7 100644
--- a/Readme.md
+++ b/Readme.md
@@ -25,12 +25,17 @@
 
 ## Starting
 
-To get KorAP running, an existing index is required.
-For testing, either download the sample index provided by
-[Kustvakt](https://github.com/KorAP/Kustvakt/tree/master/sample-index)
-or first follow the instructions on [Corpus Conversion](#corpus-conversion).
+To get KorAP running, an index is required.
+For testing, there is a test index available as a docker image. Just run
 
-To download, intialize and run KorAP pointing to that existing index
+```
+$ INDEX='example-index' docker-compose -p korap --profile=lite --profile=example up
+```
+
+to start the example image.
+Otherwise it's possible to download the sample index provided by
+[Kustvakt](https://github.com/KorAP/Kustvakt/tree/master/sample-index).
+To download, intialize and run KorAP pointing to that index folder
 (in this example stored in the `index` folder in the local directory),
 run
 
@@ -41,6 +46,9 @@
 This will make the frontend be available at
 `localhost:64543`.
 
+To use your own index, please follow the instructions
+on [Corpus Conversion](#corpus-conversion) first.
+
 To run the service with an additional user management system,
 initialize with
 
diff --git a/compose.yaml b/compose.yaml
index 5f4c730..64e785d 100644
--- a/compose.yaml
+++ b/compose.yaml
@@ -3,7 +3,7 @@
   example-index:
 services:
   examplecontainer:
-    image: "korap/example-index:latest"
+    image: "korap/example-index:0.1"
     profiles:
       - example
     volumes: