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Adds documentation for the SITL containers and .deb packages introduced in #26495. The containers are now live on Docker Hub: [`px4io/px4-sitl:latest`](https://hub.docker.com/r/px4io/px4-sitl) and [`px4io/px4-sitl-gazebo:latest`](https://hub.docker.com/r/px4io/px4-sitl-gazebo). The main addition is a [Try PX4 Simulation](https://docs.px4.io/main/en/dev_setup/try_px4) page that leads with a single `docker run` command and gets someone flying in under a minute. It lives in Getting Started, right after Recommended Hardware/Setup, so it's one of the first things new users see. The existing `.deb` package reference has been moved from `packaging/px4_sitl_deb.md` to `simulation/px4_sitl.md` and expanded to cover both containers and `.deb` packages on one page. Sections are ordered by how people use them: what's available, install, configure, connect QGC/MAVSDK, connect ROS 2. Other changes: - README now has a "Try PX4" section with the docker one-liner above "Build from Source" - Landing page (`index.md`) reworked to lead with "Try PX4" before "For Developers" - Toolchain page (`dev_env.md`) gets a tip redirecting simulation-only users to pre-built packages - `getting_started.md` and `SUMMARY.md` updated with links to the new pages - Simulation index tip updated to mention containers alongside `.deb` packages The SIH container image is published as `px4io/px4-sitl` (renamed from `px4io/px4-sitl-sih`) so the default lightweight option carries the simplest name. The Gazebo image remains `px4io/px4-sitl-gazebo`. Also upgrades all GitHub Actions in the SITL workflow to Node.js 24 compatible versions (`actions/checkout@v6`, `actions/cache@v5`, `actions/upload-artifact@v7`, `actions/download-artifact@v8`, `docker/setup-buildx-action@v4`, `docker/build-push-action@v7`) to fix the Node.js 20 deprecation warning ahead of the June 2026 deadline. --------- Signed-off-by: Ramon Roche <mrpollo@gmail.com> Co-authored-by: Hamish Willee <hamishwillee@gmail.com>
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PX4 Simulation QuickStart
First install Docker (a free tool that runs containers).
The following command will then run a PX4 quadrotor simulation that you can connect to QGroundControl, MAVSDK or ROS 2 (on Linux, macOS, and Windows):
docker run --rm -it -p 14550:14550/udp px4io/px4-sitl:latest
That's it — open QGroundControl and fly!
::: tip
To try other vehicle types append the corresponding line below to the command:
-e PX4_SIM_MODEL=sihsim_airplane # Plane
-e PX4_SIM_MODEL=sihsim_standard_vtol # Standard VTOL
-e PX4_SIM_MODEL=sihsim_rover # Ackermann rover
For more information and options see Container Images (in Pre-built SITL Packages) and SIH Simulation.
:::