Docker Commands to Remember

This article is a list of some Docker commands you should keep in mind.

1. docker exec

docker exec

• Description: execute a command in a running container
• Usage: docker exec [OPTIONS] CONTAINER COMMAND [ARG...]

Description

The docker exec command runs a new command in a running container.

Options

• -d, --detach: detached mode (run command in the background)
• -i, --interactive: keep STDIN open even if not attached
• -t, --tty: allocate a pseudo-TTY
• -u, --user: username or UID

Examples

• Execute an interactive sh shell inside mycontainer : docker exec -it mycontainer sh
• Execute an interactive sh shell inside mycontainer with the root user: docker exec -it --user root mycontainer sh