Update the docker setting for Kokoro

- use recent docker
- run it with privilege

Bug: 363237196
Test: run with Kokoro
Change-Id: I86ce8dda9b0769745f8c7da1dbfda0746ec27a07
diff --git a/build/debian/kokoro/continuous.cfg b/build/debian/kokoro/continuous.cfg
index 516b8ac..018812c 100644
--- a/build/debian/kokoro/continuous.cfg
+++ b/build/debian/kokoro/continuous.cfg
@@ -6,5 +6,7 @@
 # git_on_borg_scm.name is specified in the job configuration (next section).
 build_file: "avf/build/debian/kokoro/build.sh"
 container_properties {
-  docker_image: "us-central1-docker.pkg.dev/kokoro-container-bakery/kokoro/ubuntu/ubuntu2004/java:current"
+  docker_image: "us-central1-docker.pkg.dev/kokoro-container-bakery/kokoro/ubuntu/ubuntu2204/full:next"
+  docker_privileged: true
+  docker_user: "root"
 }