Run command to docker container in a script

Question

I need run command to docker container in a script, i trying with:

docker run -it <container> /bin/bash -c "command"

I had no error but the command is not executed

Could you be more specific? e.g. docker run -it <container> /bin/bash -c "echo 'Hello'" works fine. <container> is centos in my case — lifus
– lifus, Commented Jan 30, 2015 at 15:26
I need clear cache on nginx container, i run: docker run -it nginx /bin/bash -c "rm -f /tmp/cache/*/*/*". If i launch this command inside container it work, in this way the cache is not cleared — stecog
– stecog, Commented Jan 30, 2015 at 16:17
no, docker commit nginx successful, but the files are still there — stecog
– stecog, Commented Jan 30, 2015 at 16:32
I can not create a new image, i must not stop the service ... I do it manually — stecog
– stecog, Commented Jan 30, 2015 at 16:40

lifus · Accepted Answer · 2015-01-30 16:45:21Z

3

I can not create a new image, i must not stop the service ... I do it manually

It's possible to invoke a command in a running container:

docker exec <container_id> rm -f /tmp/cache/*/*/*

answered Jan 30, 2015 at 16:45

lifus

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6 Comments

stecog Over a year ago

I have alredy trying, i not get any error but the files were not deleted

lifus Over a year ago

@user2385354 Are you sure that rm -f /tmp/cache/*/*/* is what you actually need? Are you going to remove /tmp/cache and all its subfolders? If so, then rm -rf /tmp/cache is what you need

stecog Over a year ago

If i launch rm -rf it erase all folder and nginx stop working, i need stop and start container, instead rm -f erase only file in all folder and suibfolder.

lifus Over a year ago

You may remove all files as follows find /tmp/cache/ -type f -delete. You may also add -maxdepth <n> if you want.

lifus Over a year ago

Actually, stackoverflow.com/a/6896903/2286990 suggests exactly this. See nginx.2469901.n2.nabble.com/…

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