#!/bin/sh

set -e

cmd="$(basename "$0")"
cwd="$(pwd)"
uid="$(id -u)"
gid="$(id -g)"

[ -t 1 ] && tty=--tty

# Set correct volume permission
docker run \
  --rm \
  --read-only \
  --volume "npm-cache-$uid:/.npm" \
  npm \
  chown "$uid:$gid" "/.npm"

# Run npm command (or whatever $0 is) inside the Docker container.
exec docker run \
  --interactive \
  --rm \
  $tty \
  --user "$uid:$gid" \
  --read-only \
  --volume "$cwd:$cwd" \
  --volume "npm-cache-$uid:/.npm" \
  --workdir "$cwd" \
  npm \
  "$cmd" "$@"