Run tests with CTEST_OUTPUT_ON_FAILURE=1
diff --git a/tests/dockerfiles/Fedora_26.Dockerfile b/tests/dockerfiles/Fedora_26.Dockerfile
index 6beb83d..38a5a52 100644
--- a/tests/dockerfiles/Fedora_26.Dockerfile
+++ b/tests/dockerfiles/Fedora_26.Dockerfile
@@ -25,4 +25,4 @@
         make -j $(nproc) && \
         make install && \
         ldconfig && \
-        make test
+        make CTEST_OUTPUT_ON_FAILURE=1 test