docker-magento/compose/bin/copytocontainer

#!/usr/bin/env bash
[ $# -eq 0 ] && echo "Please specify one or more directories/files to copy to container (ex. vendor, --all)" && exit 1

REAL_SRC=$(cd -P "src" >/dev/null && pwd)
CONTAINER_ID=$(bin/docker-compose ps -q phpfpm | awk '{print $1}')

for ARG in "$@"; do
  if [ "$ARG" == "--all" ]; then
    docker cp "$REAL_SRC/./" "$CONTAINER_ID":/var/www/html/
    echo "Completed copying all files from host to container"
    bin/fixowns
    bin/fixperms
  else
    if [ -f "$REAL_SRC/$ARG" ]; then
      docker cp "$REAL_SRC/$ARG" "$CONTAINER_ID":/var/www/html/"$ARG"
    else
      docker cp "$REAL_SRC/$ARG" "$CONTAINER_ID":/var/www/html/"$(dirname "$ARG")"
    fi
    echo "Completed copying $ARG from host to container"
    bin/fixowns "$ARG"
    bin/fixperms "$ARG"
  fi
done