From: Philippe Mathieu-Daudé <philmd@redhat.com>

Install the liblttng-ust-dev package to be able to
build QEMU using the User-Space Tracer trace backend
(configure --enable-trace-backends=ust).

Suggested-by: Wainer dos Santos Moschetta <wainersm@redhat.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-Id: <20201111121234.3246812-2-philmd@redhat.com>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
---
 tests/docker/dockerfiles/ubuntu2004.docker | 1 +
 1 file changed, 1 insertion(+)

diff --git a/tests/docker/dockerfiles/ubuntu2004.docker b/tests/docker/dockerfiles/ubuntu2004.docker
index 355bbb3c63..ae889d8482 100644
--- a/tests/docker/dockerfiles/ubuntu2004.docker
+++ b/tests/docker/dockerfiles/ubuntu2004.docker
@@ -23,6 +23,7 @@ ENV PACKAGES flex bison \
     libiscsi-dev \
     libjemalloc-dev \
     libjpeg-turbo8-dev \
+    liblttng-ust-dev \
     liblzo2-dev \
     libncurses5-dev \
     libncursesw5-dev \
-- 
2.20.1