Update .gitignore

scripts/commands/database/matrix.js

@@ -0,0 +1,16 @@
+const { logger, db } = require('../../core')
+
+async function main() {
+  await db.streams.load()
+  const docs = await db.streams.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()