text: const { logger, db } = require('../core')
  
  async function main() {
    const docs = await db.find({}).sort({ cluster_id: 1 })
    const cluster_id = docs.reduce((acc, curr) => {
      if (!acc.includes(curr.cluster_id)) acc.push(curr.cluster_id)
      return acc
    }, [])
  
    const matrix = { cluster_id }
    const output = `::set-output name=matrix::${JSON.stringify(matrix)}`
    logger.info(output)
  }
  
  main()
  