docs: add docs about tutorials (#506)

Signed-off-by: Charles-Edouard Brétéché <[email protected]>

docs/README.md

@@ -4,3 +4,4 @@
 * [Release docs](./RELEASE.md)
 * [Cluster connected docs](./CLUSTER.md)
 * [Image tagging docs](./TAGGING.md)
+* [Tutorials docs](./TUTORIALS.md)

docs/TUTORIALS.md

@@ -0,0 +1,62 @@
+# Tutorials docs
+
+This docs contains informations related to the tutorials system used in the Playground
+
+## tutorials.json
+
+All tutorials are referenced in the [tutorials.json](../frontend/public/tutorials/tutorials.json) file.
+
+This file contains an array of objects and defined the hierarchy and of the tutorials menu.
+
+All properties can be inherited from the parent/overriden in the children.
+
+| Property | Description |
+|---|---|
+| name                 | Menu item name                                                                  |
+| url                  | URL where referenced files are looked up (can be an internet URL or local path) |
+| color                | Menu item color                                                                 |
+| subgroups            | Grouped children menu items                                                     |
+| policies             | Children menu items                                                             |
+| path                 | File path                                                                       |
+| title                | Menu item title                                                                 |
+| contextPath          | Path to context file                                                            |
+| oldResourceFile      | Path to old resource file                                                       |
+| clusterResourcesFile | Path to cluster resources file                                                  |
+| exceptionsFile       | Path to exception file                                                          |
+
+Example:
+
+```json
+    {
+        "name": "Other",
+        "url": "https://raw.githubusercontent.com/kyverno/policies/main/other",
+        "policies": [
+            {
+                "path": "a/add-certificates-volume",
+                "title": "Add Certificates as a Volume"
+            },
+            {
+                "path": "a/add-default-resources",
+                "title": "Add Default Resources"
+            },
+            {
+                "path": "a/add-labels",
+                "title": "Add Labels"
+            },
+            {
+                "path": "a/allowed-annotations",
+                "title": "Allowed Annotations"
+            },
+            {
+                "path": "b-d/check-env-vars",
+                "title": "Check Environment Variables"
+            },
+            {
+                "path": "rec-req/require-base-image",
+                "title": "Check Image Base"
+            }
+        ]
+    }
+```
+
+Local files should be stored in the [tutorials folder](../frontend/public/tutorials/).