Set default Docker image for MongoDB Dev Services

Author: wjglerum

docs/src/main/asciidoc/_attributes.adoc

@@ -22,6 +22,7 @@
 :amqp-image: ${amqp.image}
 :apicurio-registry-image: ${apicurio-registry.image}
 :narayana-lra-image: ${narayana-lra.image}
+:mongo-image: ${mongo.image}
 :jandex-version: ${jandex.version}
 :jandex-gradle-plugin-version: ${jandex-gradle-plugin.version}
 :kotlin-version: ${kotlin.version}

docs/src/main/asciidoc/mongodb-dev-services.adoc

@@ -35,12 +35,12 @@ You can disable the sharing with `quarkus.mongodb.devservices.shared=false`.
 The MongoDB Dev Services supports xref:compose-dev-services.adoc[Compose Dev Services].
 It relies on a `compose-devservices.yml`, such as:
 
-[source,yaml]
+[source,yaml,subs=attributes+]
 ----
 name: <application name>
 services:
   mongo:
-    image: docker.io/mongo:7.0
+    image: {mongo-image}
     ports:
       - "27017"
 ----

docs/src/main/asciidoc/mongodb.adoc

@@ -372,9 +372,9 @@ startup time if the Mongo Client is inactive. Alternatively, Mongo Clients may a
 As by default, `MongoClient` is configured to access a local MongoDB database on port 27017 (the default MongoDB port), if you have a local running database on this port, there is nothing more to do before being able to test it!
 
 If you want to use Docker to run a MongoDB database, you can use the following command to launch one:
-[source,bash]
+[source,bash,subs=attributes+]
 ----
-docker run -ti --rm -p 27017:27017 mongo:4.4
+docker run -ti --rm -p 27017:27017 {mongo-image}
 ----
 
 [NOTE]

extensions/mongodb-client/deployment/src/main/java/io/quarkus/mongodb/deployment/DevServicesBuildTimeConfig.java

@@ -3,6 +3,7 @@
 import java.util.Map;
 import java.util.Optional;
 
+import io.quarkus.runtime.annotations.ConfigDocDefault;
 import io.quarkus.runtime.annotations.ConfigDocMapKey;
 import io.quarkus.runtime.annotations.ConfigGroup;
 import io.smallrye.config.WithDefault;
@@ -22,6 +23,7 @@ public interface DevServicesBuildTimeConfig {
     /**
      * The container image name to use, for container based DevServices providers.
      */
+    @ConfigDocDefault(value = "`{mongo-image}`", escape = false)
     Optional<String> imageName();
 
     /**