Don't always set the user parameter when starting container in tests

Fixes: #41659
(cherry picked from commit a0c7c69)

Author: geoand

test-framework/common/src/main/java/io/quarkus/test/common/DefaultDockerContainerLauncher.java

@@ -118,7 +118,9 @@ public void start() throws IOException {
         args.add("-i"); // Interactive, write logs to stdout
         args.add("--rm");
 
-        args.addAll(NativeImageBuildLocalContainerRunner.getVolumeAccessArguments(containerRuntime));
+        if (!volumeMounts.isEmpty()) {
+            args.addAll(NativeImageBuildLocalContainerRunner.getVolumeAccessArguments(containerRuntime));
+        }
 
         args.add("-p");
         args.add(httpPort + ":" + httpPort);