diff --git a/Dockerfile b/Dockerfile
index 4ec9186..b5770d7 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -40,3 +40,18 @@ RUN composer require --no-update mediawiki/babel:2024.07  && \
     git clone --depth=1 --branch=REL1_42 https://github.com/wikimedia/mediawiki-extensions-CleanChanges.git CleanChanges && \
     git clone --depth=1 --branch=shavian https://git.nordgren.vip/bryce/mediawiki-extensions-UniversalLanguageSelector.git UniversalLanguageSelector
 
+
+#####
+# Wikisource bundle prerequisites
+# ===============================
+#
+# This is a partial deployment of this bundle. We exclude OCR related "ProofreadPage" 
+# and "Wikimedia OCR tool".  We retain the ability to export pages to EPUB and pdf, and 
+# connect to Wikidata as a client.
+#
+# - WikibaseClient
+# - WS Export (https://wikitech.wikimedia.org/wiki/Nova_Resource:Wikisource/Wikisource_Export)
+#   - connects to separate server running (https://github.com/wikimedia/ws-export/tree/main)
+######
+RUN cd extensions && \
+    git clone --depth=1 --branch=REL1_42 https://github.com/wikimedia/mediawiki-extensions-Wikibase.git Wikibase