Ref #33873: do not restart swarm container

Author: LEDfan

src/main/java/eu/openanalytics/containerproxy/backend/docker/DockerSwarmBackend.java

@@ -178,6 +178,7 @@ public Proxy startContainer(Authentication user, Container initialContainer, Con
                 .name(serviceName)
                 .taskTemplate(TaskSpec.builder()
                     .containerSpec(containerSpec)
+                    .restartPolicy(RestartPolicy.builder().condition(RestartPolicy.RESTART_POLICY_NONE).build())
                     .resources(ResourceRequirements.builder()
                         .reservations(reservationsBuilder.build())
                         .limits(limitsBuilder.build())