Given a string, find id of matching docker container, and return id and name or execute arbitrary command.

containerCommand.sh

#!/bin/bash

function containerCommand() {
  # Given a string, search for the matching running docker containers.
  # If more than one argument is passed, attempt to run remaning arguments
  # on that docker container.
  container=`docker ps --format '{{.ID}} {{.Names}}'1`;
  shift;
  if [[ ! -z "$@" ]]
  then
    container=`echo -n "${container}" | cut -f1 -d\ `
    docker exec -it $container $@;
  else
    echo "${container}";
  fi
}