Don't introduce circular dependency

docker/admin/install.bash

@@ -31,6 +31,7 @@ EOF
 packages="
 
 apt-file
+clang
 dctrl-tools
 docker-ce-cli
 g++

tools/ci-run.bash

@@ -4,5 +4,5 @@ set -euo pipefail
 
 echo "${DOCKER_PASSWORD}" | sudo -E docker login --username "${DOCKER_USERNAME}" --password-stdin
 
-make shell I=runtime CMD="make system"
+make system
 make publish Z=1