docs: create valkey module entry

Author: wwisser

docs/modules/valkey.md

@@ -0,0 +1,34 @@
+# Valkey
+
+!!! note This module is INCUBATING.
+While it is ready for use and operational in the current version of Testcontainers, it is possible that it may receive breaking changes in the future.
+See our [contributing guidelines](../contributing.md#incubating-modules) for more information on our incubating modules policy.
+
+Testcontainers module for [Valkey](https://hub.docker.com/r/valkey/valkey)
+
+## Valkey's usage examples
+
+You can start a Valkey container instance from any Java application by using:
+
+<!--codeinclude-->
+[Default Valkey container](../../modules/valkey/src/test/java/org/testcontainers/valkey/ValkeyContainerTest.java) inside_block:container
+<!--/codeinclude-->
+
+## Adding this module to your project dependencies
+
+Add the following dependency to your `pom.xml`/`build.gradle` file:
+
+=== "Gradle"
+```groovy
+testImplementation "org.testcontainers:valkey:{{latest_version}}"
+```
+
+=== "Maven"
+```xml
+<dependency>
+<groupId>org.testcontainers</groupId>
+<artifactId>valkey</artifactId>
+<version>{{latest_version}}</version>
+<scope>test</scope>
+</dependency>
+```

mkdocs.yml

@@ -108,6 +108,7 @@ nav:
           - modules/solr.md
           - modules/toxiproxy.md
           - modules/typesense.md
+          - modules/valkey.md
           - modules/vault.md
           - modules/weaviate.md
           - modules/webdriver_containers.md