diff --git a/.dockerignore b/.dockerignore
index fa217cb7..37fa8d33 100644
--- a/.dockerignore
+++ b/.dockerignore
@@ -7,6 +7,11 @@
 # Allow demo assets (AIUI pre-built dist)
 !demo/
 
+# Allow the Bitcoin UI mock shell (backend serves it from /docker/bitcoin-ui)
+!docker/
+docker/*
+!docker/bitcoin-ui/
+
 # Allow backend source for ISO source builds
 !core/
 !scripts/