`verdaccio` as a sinopia fork it has backward compability with plugins that are compatible with `sinopia@1.4.0`. In such case the installation is the same.
Open the `config.yaml` file and update the `auth` section as follows:
The default configuration looks like this, due we use a build-in `htpasswd` plugin by default that you can disable just commenting out the following lines.
* [sinopia-crowd](https://www.npmjs.com/package/sinopia-crowd): auth plugin for sinopia supporting atlassian crowd.
* [sinopia-activedirectory](https://www.npmjs.com/package/sinopia-activedirectory): Active Directory authentication plugin for sinopia.
* [sinopia-github-oauth](https://www.npmjs.com/package/sinopia-github-oauth): authentication plugin for sinopia2, supporting github oauth web flow.
* [sinopia-delegated-auth](https://www.npmjs.com/package/sinopia-delegated-auth): Sinopia authentication plugin that delegates authentication to another HTTP URL
* [sinopia-altldap](https://www.npmjs.com/package/sinopia-altldap): Alternate LDAP Auth plugin for Sinopia
* [sinopia-request](https://www.npmjs.com/package/sinopia-request): An easy and fully auth-plugin with configuration to use an external API.
* [sinopia-htaccess-gpg-email](https://www.npmjs.com/package/sinopia-htaccess-gpg-email): Generate password in htaccess format, encrypt with GPG and send via MailGun API to users.
* [sinopia-mongodb](https://www.npmjs.com/package/sinopia-mongodb): An easy and fully auth-plugin with configuration to use a mongodb database.
* [sinopia-htpasswd](https://www.npmjs.com/package/sinopia-htpasswd): auth plugin for sinopia supporting htpasswd format.
* [sinopia-leveldb](https://www.npmjs.com/package/sinopia-leveldb): a leveldb backed auth plugin for sinopia private npm.
* [sinopia-gitlabheres](https://www.npmjs.com/package/sinopia-gitlabheres): Gitlab authentication plugin for sinopia.
* [sinopia-gitlab](https://www.npmjs.com/package/sinopia-gitlab): Gitlab authentication plugin for sinopia
* [sinopia-ldap](https://www.npmjs.com/package/sinopia-ldap): LDAP auth plugin for sinopia.