docs(templates/community): rewrite documentation

Author: lowlighter

source/templates/community/README.md

@@ -1,25 +1,62 @@
-### 📕 Community templates
+<table>
+  <tr><th colspan="2"><h3>📕 Community templates</h3></th></tr>
+  <tr><td colspan="2" align="center">A template capable of rendering markdown from a given template file.</td></tr>
+  <tr>
+    <td  colspan="2" align="center">
+      <img src="https://github.com/lowlighter/lowlighter/blob/master/metrics.markdown.png" alt=""></img>
+      <img width="900" height="1" alt="">
+    </td>
+  </tr>
+</table>
 
-It is possible to use official releases with templates from forked repositories (whether you own them or not).
+___
 
-Use `setup_community_templates` option to specify additional external sources using following format: `user/repo@branch:template`.
-Templates added this way will be downloaded through git and can be used by prefixing their name with an `@`.
+Community templates are a way to use official releases of [lowlighter/metrics](https://github.com/lowlighter/metrics) while using templates from external repositories (owned or not).
 
-By default, community templates use `template.mjs` from official `classic` template instead of their own, to prevent executing malicious code and avoid token leaks.
+## 📮 Using community templates
 
-If you trust it, append `+trust` after their name.
+Use `setup_community_templates` option to specify additional external sources using following format:
+```
+user/repo@branch:template
+```
+
+These templates will be downloaded through git and will be usable by prefixing their name with an `@`.
+
+*Example: using `my-theme` template by downloading it from `user/repo`*
+```yml
+- uses: lowlighter/metrics@latest
+  with:
+    template: "@my-theme"
+    setup_community_templates: "user/repo@main:my-theme"
+```
+
+For security reasons, community templates will use the `classic` template `template.mjs` instead of their own.
+If you trust a community template, append `+trust` to it.
 
-```yaml
+*Example: using and trusting `my-theme` template by downloading it from `user/repo`*
+```yml
 - uses: lowlighter/metrics@latest
   with:
-    # ... other options
-    template: "@super-metrics"
-    # Download "super-metrics" and "trusted-metrics" templates from "octocat/metrics@master"
-    # "@trusted-metrics" template can execute remote JavaScript code
-    setup_community_templates: octocat/metrics@master:super-metrics, octocat/metrics@master:trusted-metrics+trust
+    template: "@my-theme"
+    setup_community_templates: "user/repo@main:my-theme+trust"
 ```
 
-To create a new community template, fork this repository and create a new folder in `/source/templates` with same structure as current templates.
-Then, it's just as simple as HTML and CSS with a bit of JavaScript!
+> ⚠️ Note that it basically allow remote code execution and the template may have access to **sensitive data** along with **tokens**! Use this feature only from a trusted source. Remember that its content may also change at any time...
+
+## 📪 Creating community templates
+
+To create a new template, start a new repository and create a new folder in `/source/templates` with the same file structure as in [lowlighter/metrics](https://github.com/lowlighter/metrics) templates:
+
+* `/source/templates`
+  * `{template-name}`
+    * `README.md`,
+    * `metadata.yml`,
+    * `image.svg`
+    * `partials/`
+      * `_.json`
+      * `*.ejs`
+
+Then use HTML, CSS, and [EJS](https://github.com/mde/ejs) to create something awesome!
+Do not hesitate to share it on [GitHub discussions](https://github.com/lowlighter/metrics/discussions)!
 
-If you made something awesome, please share it here!
+For more information, see [contribution guide](/CONTRIBUTING.md).

source/templates/community/examples.yml

@@ -1,9 +1,19 @@
-- name: Example
+- name: Using a community template
   uses: lowlighter/metrics@latest
   with:
     token: ${{ secrets.METRICS_TOKEN }}
     template: "@classic"
     setup_community_templates: "lowlighter/metrics@master:classic"
   test:
     modes:
-      - action
+      - action
+
+- name: Using a trusted community template
+  uses: lowlighter/metrics@latest
+  with:
+    token: ${{ secrets.METRICS_TOKEN }}
+    template: "@terminal"
+    setup_community_templates: "lowlighter/metrics@master:terminal+trust"
+  test:
+    modes:
+      - action

source/templates/community/metadata.yml

@@ -0,0 +1,4 @@
+name: "📕 Community templates"
+description: |
+  A template mimicking GitHub visual identity.
+  This is also the default template.