# dynamic-container-path-webpack-plugin > A `publicPath` mutator webpack plugin for module federation. ## About plugin Change `publicPath` at run time rather than build time for dynamic module federated containers. This should be used in conjunction with module federation's [exposed methods for initializing remote containers dynamically](https://webpack.js.org/concepts/module-federation/#dynamic-remote-containers) instead of using the `remotes` parameter for static paths. ## Install ```bash npm i -D dynamic-container-path-webpack-plugin ``` ## Usage `webpack.config.js` ```js const { ModuleFederationPlugin } = require('webpack').container; const DynamicContainerPathPlugin = require('dynamic-container-path-webpack-plugin'); const setPublicPath = require('dynamic-container-path-webpack-plugin/set-path'); module.exports = { entry: { Host: ['./app.js'], }, output: { // this will be changed later by 'DynamicContainerPathPlugin' at runtime publicPath: '/', }, plugins: [ new ModuleFederationPlugin({ // ... }), new DynamicContainerPathPlugin({ iife: setPublicPath, entry: 'Host', }), ], }; ``` ## Options ### `iife` - Type: `function` An immediately invoked function expression to get `publicPath` at runtime. ### `entry` - Type: `string` The entry point name of the application. **Note**: You have access to the **entry** and **chunk** via your **iife**: ```js function determinePublicPath(entry, chunk) { if (chunk !== "Host") { return `/something/${entry}/`; } return "/"; } new DynamicContainerPathPlugin({ iife: determinePublicPath, entry: 'Host', }), ``` ## Getting Started See [Tutorial - A Guide to Module Federation for Enterprise](https://dev.to/waldronmatt/tutorial-a-guide-to-module-federation-for-enterprise-n5) for more information and to learn how this webpack plugin works. ## License MIT