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Set up a staging environment in labs * Create instance in horizon.wikimedia.org * Use Debian Jessie image * Verify node@6 and npm install latest npm (Jenkins Job Builder uses npm-node-6-jessie) * Verify engines requirements on package.json * Create domain alias/proxy and point it to the instance

Set up a staging environment in labs * Create instance in horizon.wikimedia.org * Use Debian Jessie image * Verify node@6 and npm install latest npm (Jenkins Job Builder uses npm-node-6-jessie) * Verify engines requirements on package.json * Create domain alias/proxy and point it to the instance * Document staging setup on a `docs/` guide

Set up a staging environment in labs * Create instance in horizon.wikimedia.org * Use Debian Jessie image * Verify node@6 and npm install latest npm (Jenkins Job Builder uses npm-node-6-jessie) * Verify engines requirements on package.json * Create domain alias/proxy and point it to the instance * Document staging setup on a `docs/` guide