Add K3s module (#864)

Author: joebowbeer

docs/modules/k3s.md

@@ -0,0 +1,26 @@
+# K3s Module
+
+[K3s](https://k3s.io/) is a highly available, certified Kubernetes distribution designed for production workloads in unattended, resource-constrained, remote locations or inside IoT appliances.
+
+## Install
+
+```bash
+npm install @testcontainers/k3s --save-dev
+```
+
+## Examples
+
+<!--codeinclude-->
+[Starting a K3s server:](../../packages/modules/k3s/src/k3s-container.test.ts) inside_block:starting_k3s
+<!--/codeinclude-->
+
+<!--codeinclude-->
+[Connecting to the server using the Kubernetes JavaScript client:](../../packages/modules/k3s/src/k3s-container.test.ts) inside_block:connecting_with_client
+<!--/codeinclude-->
+
+## Known limitations
+
+!!! warning
+    * K3sContainer runs as a privileged container and needs to be able to spawn its own containers. For these reasons,
+    K3sContainer will not work in certain rootless Docker, Docker-in-Docker, or other environments where privileged
+    containers are disallowed.

mkdocs.yml

@@ -50,6 +50,7 @@ nav:
       - Elasticsearch: modules/elasticsearch.md
       - GCloud: modules/gcloud.md
       - HiveMQ: modules/hivemq.md
+      - K3s: modules/k3s.md
       - Kafka: modules/kafka.md
       - Localstack: modules/localstack.md
       - MariaDB: modules/mariadb.md