diff --git a/README.md b/README.md
index dea52fd..61c8072 100644
--- a/README.md
+++ b/README.md
@@ -24,3 +24,11 @@ Run the exporter:
     FLASK_APP=exporter.py python -m flask run -h 127.0.0.1 -p 5000
 
 Now scrape `/metrics` on port localhost:5000.
+
+## Docker
+
+Or use the prebuilt docker image:
+
+    docker run -e FIREFLY_API_HOST="https://your-firefly-installation" -e FIREFLY_PERSONAL_ACCESS_TOKEN="abcd....1234" -p 9449:5000 zknt/firefly-exporter
+
+and scrape port 9449 on your docker host.