docker exec

CautionExec inside container

docker exec -it <c> sh

Runs a command inside a running container; -it sh/bash for a shell.

Examples

docker exec -it db psql -U postgresOpen psql in the DB container

Syntax

docker exec -it <container> <cmd>

Before you run it

Changes inside a container aren't persistent; mind side effects.

Used when you see

Containers can't talk to each other

Test ping/DNS from inside a container

See the whole flow →

Related commands

docker psList containers
docker logsContainer logs

The same reference, with no signal at all

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