added script to run npm installs without having to install NodeJS on …

…the host machine

README.md

@@ -21,6 +21,9 @@ clone the two repos inventaire needs to run :
 ```
 git clone https://github.com/inventaire/inventaire.git
 git clone https://github.com/inventaire/entities-search-engine.git
+# Install NodeJS dependencies
+./scripts/docker_npm inventaire install
+./scripts/docker_npm entities-search-engine install
 ```
 
 Create empty folders for docker volume to dump backup. In accordance with docker-compose volumes, example: `mkdir data couch-test couch es`

scripts/docker_npm

@@ -0,0 +1,13 @@
+#!/usr/bin/env bash
+set -eu
+
+path=$1
+cwd=$(realpath $path)
+dir=$(dirname $cwd)
+workdir="/opt/${dir}"
+uid=$(stat -c '%u' $cwd)
+
+# All args but the first one
+npm_args="${@:2}"
+
+docker run --user $uid --rm --volume "${cwd}:/${workdir}" --workdir $workdir node:8 npm --color=always $npm_args