# Containerized configuration

The TERR service provides custom properties that are specific to the Linux operating system.

Configuration property | Default setting | Description
--- | --- | ---
`use.engine.containers` | `TRUE` | Runs the TERR engine inside a container when this value is set to `TRUE` (the default).
`ram.limit` | `1000` | The amount of RAM and SWAP memory to which the TERR engine containers are constrained, in megabytes.
`docker.image.name` | `debian:12-slim` | When you use containers, the TERR service builds a custom image based on a starting image. This property is used by the Dockerfile as the `FROM` line. See https://docs.docker.com/engine/reference/builder/#from for more information. The TERR service default is debian:12-slim.

For more information, see Containerized Service.