Commandes Linux : docker container exec

DOCKER CONTAINER EXEC

Usage:	docker container exec [OPTIONS] CONTAINER COMMAND [ARG...]

Run a command in a running container

Options:
  -d, --detach               Detached mode: run command in the background
      --detach-keys string   Override the key sequence for detaching a container
  -e, --env list             Set environment variables
  -i, --interactive          Keep STDIN open even if not attached
      --privileged           Give extended privileges to the command
  -t, --tty                  Allocate a pseudo-TTY
  -u, --user string          Username or UID (format: [:])
  -w, --workdir string       Working directory inside the container

Exécuter une commande sur un container en cours d’exécution :

docker container exec [options] container command [arg...]

Equivaut à :
docker exec [options] container command [arg...]
ex :
Exécuter un ping en foreground sur le container nommé test :

$ docker container exec test /bin/bash -c 'ping -c 3 8.8.8.8'
PING 8.8.8.8 (8.8.8.8) 56(84) bytes of data.
64 bytes from 8.8.8.8: icmp_seq=1 ttl=55 time=19.6 ms
64 bytes from 8.8.8.8: icmp_seq=2 ttl=55 time=18.2 ms
64 bytes from 8.8.8.8: icmp_seq=3 ttl=55 time=24.1 ms

--- 8.8.8.8 ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 2002ms
rtt min/avg/max/mdev = 18.204/20.662/24.160/2.542 ms

Exécuter un ping en background sur le container nommé test :

$ docker container exec -d test /bin/bash -c 'ping -c 3 8.8.8.8'
$

Exécuter un bash en attachant le container nommé test :

$ docker container exec -it test /bin/bash
root@863dc06b964a:/#