Fix test build

Author: Qizot

tests/Dockerfile

@@ -14,6 +14,7 @@ COPY pyproject.toml .
 COPY examples/transcription/pyproject.toml ./examples/transcription/
 COPY examples/poet_chat/pyproject.toml ./examples/poet_chat/
 COPY examples/selective_subscription/pyproject.toml ./examples/selective_subscription/
+COPY examples/multimodal/pyproject.toml ./examples/multimodal/
 
 COPY uv.lock .