docker-magento/compose/bin/copyfromcontainer

#!/bin/bash
[ -z "$1" ] && echo "Please specify a directory or file to copy from container (ex. vendor, --all)" && exit

REAL_SRC=$(cd -P "src" && pwd)
if [ "$1" == "--all" ]; then
  docker cp $(docker-compose ps -q phpfpm|awk '{print $1}'):/var/www/html/./ $REAL_SRC/
  echo "Completed copying all files from container to host"
else
  docker cp $(docker-compose ps -q phpfpm|awk '{print $1}'):/var/www/html/$1 $REAL_SRC/
  echo "Completed copying $1 from container to host"
fi