Create installation section

This new section surfaces the installation documentation for all the
Tekton components.

This first iteration adds Pipelines and Triggers, more work is required
for other components docs to be included here.

content/en/docs/Concepts/_index.md

 ---
 title: "Concepts"
 linkTitle: "Concepts"
-weight: 2
+weight: 3
 description: >
   Conceptual and technical information about Tekton
 ---

content/en/docs/How-to guides/_index.md

@@ -2,7 +2,7 @@
 ---
 title: "How-to Guides"
 linkTitle: "How-to Guides"
-weight: 3
+weight: 4
 description: >
   Guides to help you complete a specific goal
 ---

content/en/docs/Installation/_index.md

+---
+title: "Installation"
+linkTitle: "Installation"
+weight: 2
+description: >
+  Installation instructions for Tekton components
+---
+
+This section contains guides to install the latest version of the Tekton
+components. For other versions, select the component and version from the
+drop-down menu in the top right corner, then navigate to the corresponding
+installation document.
+

content/en/docs/Installation/local-installation.md

+<!--
+---
+title: "Local Kubernetes cluster"
+linkTitle: "Local cluster"
+weight: 1
+description: >
+  Set up a Kubernetes cluster on your computer to test Tekton.
+---
+-->
+
+There are several tools to run a local Kubernetes cluster on your computer. The
+Tekton documentation often includes instructions for either **minikube** or
+**kind**. 
+
+See the corresponding [minikube][] and [kind][] documentation to learn how to
+install and set up a cluster on your computer. 
+
+You can find some additional resources on the Tekton repositories:
+
+- Instructions to run both tools with a local registry are available on the
+  [Pipelines repository][local-setup].
+
+- You can find some convenience scripts to run Tekton components with kind on
+  the [plumbing repository][kind-setup].
+
+## Further reading
+
+-   [Getting started with Tasks][tasks-intro]
+
+[minikube]: https://minikube.sigs.k8s.io/docs/start/
+[kind]: https://kind.sigs.k8s.io/docs/user/quick-start/
+[kind-setup]: https://github.com/tektoncd/plumbing/tree/main/hack
+[local-setup]: https://github.com/tektoncd/pipeline/blob/main/docs/developers/local-setup.md
+[tasks-intro]: /docs/getting-started/tasks/
+

content/en/docs/Installation/pipelines.md

+<!--
+---
+title: "Install Tekton Pipelines"
+linkTitle: "Tekton Pipelines"
+weight: 2
+description: >
+  Install Tekton Pipelines on your cluster
+---
+-->
+
+{{% readfile "/docs/Pipelines/install.md" %}}
+
+---
+{{< card  >}}
+Source for this document [available on GitHub](https://github.com/tektoncd/pipeline/blob/main/docs/install.md).
+{{< /card >}}
+

content/en/docs/Installation/triggers.md

+<!--
+---
+title: "Install and set up Tekton Triggers"
+linkTitle: "Tekton Triggers"
+weight: 2
+description: >
+  Install Tekton Triggers on your cluster
+---
+-->
+
+{{% readfile "/docs/Triggers/install.md" %}}
+
+---
+{{< card  >}}
+Source for this document [available on GitHub](https://github.com/tektoncd/triggers/blob/main/docs/install.md).
+{{< /card >}}
+

content/en/docs/_index.md

@@ -8,6 +8,9 @@ menu:
     weight: 20
 ---
 
-Tekton is a cloud-native solution for building CI/CD systems. It consists of Tekton Pipelines, which provides
-the building blocks, and of supporting components, such as Tekton CLI and Tekton Catalog, that make Tekton a complete ecosystem.  
-Tekton is part of the [CD Foundation](https://cd.foundation/), a [Linux Foundation](https://www.linuxfoundation.org/projects/) project. For more information, see the [Overview of Tekton](/docs/concepts/overview/).
+Tekton is a cloud-native solution for building CI/CD systems. It consists of
+Tekton Pipelines, which provides the building blocks, and of supporting
+components, such as Tekton CLI and Tekton Catalog, that make Tekton a complete
+ecosystem.  Tekton is part of the [CD Foundation](https://cd.foundation/), a
+[Linux Foundation](https://www.linuxfoundation.org/projects/) project. For more
+information, see the [Overview of Tekton](/docs/concepts/overview/).