Update test-containers readme

Author: matt-aitken

internal-packages/testcontainers/README.md

@@ -1,10 +1,3 @@
-# Redis worker
+# Test container
 
-This is a simple worker that pulls tasks from a Redis queue (also in this package).
-
-Features
-
-- Configurable settings for concurrency and pull speed.
-- Job payloads.
-- A schema so only defined jobs can be added to the queue.
-- The ability to have future dates for jobs.
+This is package exposes some useful vitest utilities for writing tests with Postgres, Prisma, and Redis.