Can't see output of Docker container

Question

I have such dockerfile:

FROM ubuntu
CMD "Hello docker!"
ENTRYPOINT echo

I build image as following:

docker build -t mydocker .

Then I run it:

docker run --name mydocker1 -t mydocker

But as output I see only empty string, I exptected to see "Hello docker1" though. I tried to also:

docker logs mydocker1

It gives me empty string too.

How to do it correctly?

try `sleep infinity` as your CMD and ENTRYPOINT both complete immediately, so your container exits — user2915097, Nov 22 '16 at 14:43
@user2915097 I should add `CMD sleep infinity` at the end of the dockerfile? — Kenenbek Arzymatov, Nov 22 '16 at 14:48
you should read http://stackoverflow.com/questions/21553353/what-is-the-difference-between-cmd-and-entrypoint-in-a-dockerfile — user2915097, Nov 22 '16 at 14:52

score 1 · Accepted Answer · answered Nov 22 '16 at 14:48

1

Use it in the following manner :

FROM ubuntu:14.04
CMD ["Hello docker!"]
ENTRYPOINT ["echo"]

answered Nov 22 '16 at 14:48

Rambler

1 Answers1