npm@4 file dependency resolutions

Dockerfile

FROM node:7

COPY package-a.json /test/package-a/package.json
COPY package-b.json /test/package-b/package.json
COPY entrypoint.sh /test/entrypoint.sh

ENTRYPOINT ["/test/entrypoint.sh"]

entrypoint.sh

#!/bin/bash

cd /test/package-a
npm install

cd /test/package-b
npm install

# list some dependencies for comparison
echo "--> package-a/node_modules/"
ls -al /test/package-a/node_modules | head -n 10
echo "---> package-b/node_modules/"
ls -al /test/package-b/node_modules | head -n 10

tail -f /dev/null

package-a.json

{
  "name": "package-a",
  "version": "1.0.0",
  "description": "",
  "main": "index.js",
  "scripts": {
    "test": "echo \"Error: no test specified\" && exit 1"
  },
  "keywords": [],
  "author": "",
  "license": "ISC",
  "dependencies": {
    "webpack": "3.8.1"
  }
}

package-b.json

{
  "name": "package-b",
  "version": "1.0.0",
  "description": "",
  "main": "index.js",
  "scripts": {
    "test": "echo \"Error: no test specified\" && exit 1"
  },
  "keywords": [],
  "author": "",
  "license": "ISC",
  "dependencies": {
    "package-a": "file:../package-a"
  }
}