我有一个docker exec命令,我想等待它完成之后再继续执行其余的Shell脚本,我该如何完成?
#!/bin/bash
docker exec -it debian sleep 10;
wait
echo done
更新:不应使用-it选项
#!/bin/bash
docker exec debian sleep 10;
wait
echo done
答案 0 :(得分:1)
docker exec
命令将等待,直到默认完成为止。我可以想到,docker exec
在其运行的命令完成之前返回的可能原因是:
docker exec
使用分离标记(也称为-d
)在后台运行。以下是一些示例:
$ # launch a container to test:
$ docker run -d --rm --name test-exec busybox tail -f /dev/null
a218f90f941698960ee5a9750b552dad10359d91ea137868b50b4f762c293bc3
$ # test a sleep command, works as expected
$ time docker exec -it test-exec sleep 10
real 0m10.356s
user 0m0.044s
sys 0m0.040s
$ # test running without -it, still works
$ time docker exec test-exec sleep 10
real 0m10.292s
user 0m0.040s
sys 0m0.040s
$ # test running that command with -d, runs in the background as requested
$ time docker exec -itd test-exec sleep 10
real 0m0.196s
user 0m0.056s
sys 0m0.024s
$ # run a command inside the container in the background using a shell and &
$ time docker exec -it test-exec /bin/sh -c 'sleep 10 &'
real 0m0.289s
user 0m0.048s
sys 0m0.044s
答案 1 :(得分:0)
更新:不应使用-it选项。这应该起作用。
#!/bin/bash
docker exec debian sleep 10;
wait
echo done