message: chore: minor improvments to redis documentation
diff: @@ -28,15 +28,15 @@ We don't typically suggest using a persistent redis for in-memory cache scenario
  This image is prepared to be used on Lagoon. There are therefore some things already done:
  * Folder permissions are automatically adapted with [`fix-permissions`](https://github.com/uselagoon/lagoon-images/blob/main/images/commons/fix-permissions)so this image will work with a random user.
  -* The files within `/etc/redis/*` are parsed through [`envplate`](https://github.com/kreuzwerker/envplate)with a container-entrypoint.
  +* The files within `/etc/redis/*` are templated using [`envplate`](https://github.com/kreuzwerker/envplate) via a container-entrypoint.
  ## Included `redis.conf` configuration file
  -The image ships a _default_ Redis configuration file, optimized to work on Lagoon. Some options are configurable via environment variables \(see [Environment Variables](../using-lagoon-advanced/environment-variables.md)\).
  +The image ships a _default_ Redis configuration file, optimized to work on Lagoon.
  -## Environment Variables
  +### Environment Variables
  -Environment variables to change redis' options can be defined in the Redis base image. See also [https://raw.githubusercontent.com/antirez/redis/4.0/redis.conf](https://raw.githubusercontent.com/antirez/redis/4.0/redis.conf) for further config.
  +Some options in this default configuration are configurable via [runtime environment variables](../using-lagoon-advanced/environment-variables.md#runtime-environment-variables-lagoon-api).
  | Environment Variable | Default | Description |
  | :------------------- | :---------- | :---------------------------------------------------------------------------------------- |
  @@ -46,6 +46,11 @@ Environment variables to change redis' options can be defined in the Redis base
  | `MAXMEMORYPOLICY` | allkeys-lru | The policy to use when evicting keys if redis reaches its maximum memory usage |
  | `REDIS_PASSWORD` | disabled | Enables [authentication feature](https://redis.io/topics/security#authentication-feature) |
  +## Custom configuration
  +
  +By building on the base image you can include custom configuration.
  +See [https://raw.githubusercontent.com/antirez/redis/4.0/redis.conf](https://raw.githubusercontent.com/antirez/redis/4.0/redis.conf) for full documentation of the redis configuration file.
  +
  ## Redis-persistent
  Based on the [Lagoon `redis` image](https://github.com/uselagoon/lagoon-images/blob/main/images/redis/5.Dockerfile), the [Lagoon `redis-persistent` Docker image](https://github.com/uselagoon/lagoon-images/blob/main/images/redis-persistent/5.Dockerfile) is intended for use when the Redis service must be utilized in `persistent` mode \(ie. with a persistent volume where keys will be saved to disk\).
  