ci: virtual env file system info

Signed-off-by: CrazyMax <crazy-max@users.noreply.github.com>

.github/workflows/virtual-env.yml

@@ -16,6 +16,9 @@ jobs:
           - ubuntu-20.04
           - ubuntu-18.04
     steps:
+      -
+        name: File system
+        run: df -ah
       -
         name: List install packages
         run: apt list --installed