docker run をコンテナの並列実行

test.sh

#!/bin/bash

DIRS=("/bin" "/etc" "/usr") # SUCCESS
# DIRS=("/bin" "/etc" "/usr" "/hogehoge") # FAILURE

IDS=""
for D in ${DIRS[*]}; do
  IDS=$IDS" `docker run -d ubuntu du -sh $D`"
done

echo "containers : $IDS"

# 各コンテナの結果を集める
RESULT=0
for S in `time docker wait $IDS`; do
  RESULT=`expr $RESULT + $S`
done

# 失敗してたら各コンテナのログを表示
if [ $RESULT -eq 0 ]; then
  echo "SUCCESS!"
  exit 0
else
  for c in ${IDS[*]}; do
    docker logs $c
  done
  echo "FAILURE!!"
  exit 1
fi