Docker logs streams

[cdalexndr]

Problem description

docker logs command prints on stdout AND stderr matching the container's streams, but there is no mention of this behaviour in documentation.

Problem location

• I saw a problem on the following URL: https://docs.docker.com/engine/reference/commandline/logs/

Suggestions for a fix

Mention streams behavior and include some examples like:

How to find something in logs (both stderr and stdout streams):
docker logs docker_container_1 2>&1 | grep something

Related: moby/moby#41139

[docker-robott]

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[docker-robott]

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