Merge pull request #16363 from geoand/jib-warning

Try to make the docker related note more prominent

docs/src/main/asciidoc/container-image.adoc

@@ -30,7 +30,7 @@ To use this feature, add the following extension to your project:
 ./mvnw quarkus:add-extension -Dextensions="container-image-jib"
 ----
 
-NOTE: In situations where all that is needed to build a container image and no push to a registry is necessary (essentially by having set `quarkus.container-image.build=true` and left `quarkus.container-image.push` unset - it defaults to `false`), then this extension creates a container image and registers
+WARNING: In situations where all that is needed to build a container image and no push to a registry is necessary (essentially by having set `quarkus.container-image.build=true` and left `quarkus.container-image.push` unset - it defaults to `false`), then this extension creates a container image and registers
 it with the Docker daemon. This means that although Docker isn't used to build the image, it is nevertheless necessary. Also note that using this mode, the built container image *will*
 show up when executing `docker images`.