Add welcome/contributing section to the home page (#653)

Signed-off-by: Yuri Shkuro <github@ysh.us>

content/get-involved.md

@@ -2,7 +2,8 @@
 title: Get Involved
 ---
 
-Jaeger is an open source project with [open governance](https://github.com/jaegertracing/jaeger/blob/main/GOVERNANCE.md). We welcome contributions from the community, and we’d love your help to improve and extend the project. Here are some ideas for how to get involved with the project. Some of them don't even require any coding.
+Jaeger is an open source project with [open governance](https://github.com/jaegertracing/jaeger/blob/main/GOVERNANCE.md). We welcome contributions from the community, and we'd love your help to improve and extend the project. Below you will find some ideas for how to get involved with the project. Some of them don't even require any coding. There is also a good 
+CNCF guide on [how to start contributing to open source and figure out where to begin](https://contribute.cncf.io/contributors/getting-started/).
 
 ## No-coding involvement
 

content/mentorship.md

@@ -4,6 +4,10 @@ title: Mentorships
 
 The Jaeger project regularly participates in mentorship programs via CNCF, such as [Outreachy](https://www.outreachy.org/), [Google Summer of Code](https://summerofcode.withgoogle.com/), and [LFX Mentorship](https://mentorship.lfx.linuxfoundation.org/). As a mentee, you will have the opportunity to contribute to an open-source project while working under the guidance of an experienced mentor who is an active contributor to the project and open-source community. The mentees receive an internship stipend.
 
+See also:
+  * [For mentees](../mentorship-for-mentees/)
+  * [For mentors](../mentorship-for-mentors/)
+
 ## LFX Mentorship Sep-Nov 2023
 
 * [Ansh Goyal](https://github.com/anshgoyalevil) -- [Upgrade Jaeger UI to the latest version of React.js](https://github.com/jaegertracing/jaeger-ui/issues/998)

themes/jaeger-docs/layouts/index.html

@@ -6,5 +6,6 @@
 {{ partial "home/why.html" . }}
 {{ partial "home/features.html" . }}
 {{ partial "home/articles.html" (dict "posts" $posts) }}
+{{ partial "home/contributing.html" . }}
 {{ partial "home/cncf.html" . }}
 {{ end }}

themes/jaeger-docs/layouts/partials/home/contributing.html

@@ -0,0 +1,15 @@
+<section class="section section--contributing">
+    <div class="container has-text-centered">
+        <h1 class="title is-size-2 is-size-3-touch is-spaced">Welcome to the community!</h1>
+        <h4 class="subtitle is-size-4 is-size-5-mobile">
+            Jaeger is an open source project with <a href="https://github.com/jaegertracing/jaeger/blob/main/GOVERNANCE.md" target="_blank">open governance</a>. 
+            It is built by engineers for engineers. 
+            We welcome contributions from the community, 
+            and we'd love your help to improve and extend the project.
+            You can <a href="/get-involved/">get involved</a> as a contributor,
+            participate in our <a href="/mentorship/">mentorships</a>,
+            or even become a <a href="https://github.com/jaegertracing/jaeger/blob/main/GOVERNANCE.md#becoming-a-maintainer" target="_blank">maintainer</a>.
+        </h4>
+    </div>
+</section>
+