diff --git a/.gitea/workflows/build-ubuntu.yml b/.gitea/workflows/build-ubuntu.yml
index a49aaa4..93573d5 100644
--- a/.gitea/workflows/build-ubuntu.yml
+++ b/.gitea/workflows/build-ubuntu.yml
@@ -70,6 +70,12 @@ jobs:
           echo -------------------
           ls -ld "$(realpath src)"
           echo -------------------
+          docker info --format 'Name={{.Name}} OperatingSystem={{.OperatingSystem}} DockerRootDir={{.DockerRootDir}}'
+          echo -------------------
+          docker info | sed -n '/Server:/,/Client:/p'
+          echo -------------------
+          docker run --rm alpine sh -c 'echo daemon-container-can-run && pwd && ls -ld /workspace /workspace/daqbuf /workspace/daqbuf/build1 /workspace/daqbuf/build1/src 2>&1 || true'
+          echo -------------------
           echo -------------------
           echo -------------------
           ls ${{ gitea.workspace }}