diff --git a/projects/brunsli/Dockerfile b/projects/brunsli/Dockerfile
index 24dc994f1ae9..a173cae95605 100644
--- a/projects/brunsli/Dockerfile
+++ b/projects/brunsli/Dockerfile
@@ -21,4 +21,4 @@ RUN git clone --depth 1 https://github.com/google/brunsli.git && \
     cd brunsli && \
     git submodule update --init --depth 1
 WORKDIR brunsli
-COPY build.sh $SRC/
+COPY *.sh $SRC/
diff --git a/projects/brunsli/run_tests.sh b/projects/brunsli/run_tests.sh
new file mode 100644
index 000000000000..543ae943706b
--- /dev/null
+++ b/projects/brunsli/run_tests.sh
@@ -0,0 +1,18 @@
+#!/bin/bash -eux
+# Copyright 2025 Google LLC.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+###############################################################################
+
+make test