docker-exec - Man Page

• Enter an interactive shell session on an already-running container: docker exec [-it|--interactive --tty] container_name /bin/bash
• Run a command in the background (detached) on a running container: docker exec [-d|--detach] container_name command
• Select the working directory for a given command to execute into: docker exec [-it|--interactive --tty] [-w|--workdir] path/to/directory container_name command
• Run a command in background on existing container but keep stdin open: docker exec [-i|--interactive] [-d|--detach] container_name command
• Set an environment variable in a running Bash session: docker exec [-it|--interactive --tty] [-e|--env] variable_name=value container_name /bin/bash
• Run a command as a specific user: docker exec [-u|--user] user container_name command

tldr.sh

docker exec [Options] CONTAINER COMMAND [ARG...]

Alias for docker container exec.

-d, --detach[=false] Detached mode: run command in the background

--detach-keys="" Override the key sequence for detaching a container

-e, --env= Set environment variables

--env-file= Read in a file of environment variables

-i, --interactive[=false] Keep STDIN open even if not attached

--privileged[=false] Give extended privileges to the command

-t, --tty[=false] Allocate a pseudo-TTY

-u, --user="" Username or UID (format: "[:]")

-w, --workdir="" Working directory inside the container

docker(1)