node can't find modules that exists in parent node_modules folder

I am using node 0.12.0 with express and created a Docker image.
This is my directory structure:


My package.json looks like:

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  • {
      "name": "test",
      "version": "2.0.0",
      "private": true,
      "dependencies": {
        "deep-extend": "^0.3.2",

    and config/config.js looks like:

    var deepExtend = require('deep-extend');
    module.exports = deepExtend({}, .....);

    I have an issue running this app. When running it with node server/app I got and error:

    Error: Cannot find module 'deep-extend'

    When running the following, the problem solved and node server/app runs fine:

    cd config
    npm install deep-extend

    When is the problem?
    Why node doesn’t look on parent folder for node_modules?

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  • One Solution collect form web for “node can't find modules that exists in parent node_modules folder”

    In order to solve this I had to add the node_modules folder into my NODE_PATH environment variable.

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