(command.CommandList
  children: [
    (C {<set>} {<-ex>})
    (C {<docker>} {<build>} {<-t>} {<arrow-hdfs-test>} {<-f>} {<'hdfs/Dockerfile'>} {<.>})
    (C {<bash>} {<'hdfs/restart_docker_container.sh'>})
    (C {<docker>} {<exec>} {<-it>} {<arrow-hdfs>} {<'/io/hdfs/run_tests.sh'>})
    (C {<docker>} {<stop>} {<arrow-hdfs>})
  ]
)