Project runtimes - LStack documentation

Project runtimes let LStack manage the software represented by a project. Runtime configuration is separate from AI worker execution: a project may have a runtime even when no worker is active.

Runtime modes

Mode	Use case
`cli`	Run a command and capture its output and exit status
`service`	Manage a long-running local service
`site`	Run a web application with a browser-facing URL and health check
`stack`	Manage a multi-service Docker Compose application

Build sources

Container-backed runtimes can use a project Dockerfile, a prebuilt image, or a Compose configuration. The dashboard exposes build, start, stop, restart, rebuild, health, and log operations appropriate to the configured mode.

Docker is required for container-backed runtimes. stack mode also requires Docker Compose v2.

Templates

Built-in runtime templates are visible in Settings. Each template is version-stamped and read-only. Applying one updates the project’s runtime configuration only; it does not create a ticket or ask a worker to change the project.