Use the configs option.

tasks/shinyproxy_docker_service.yml

@@ -29,11 +29,6 @@
   - name: Install the shinyproxy configuration file
     template: src=shinyproxy-2-conf.yml.j2 dest={{ shinyproxy_as_docker_src_dir }}/application.yml owner=root group=root mode=0400
 
-  when: shinyproxy_container_backend == 'docker-swarm'
-  tags: [ 'shinyproxy', 'shinyproxy_swarm', 'docker' ]
-
-- name: Manage the composition of shinyproxy as a docker swarm stack
-  block:
   - name: Install the docker compose file
     template: src=shinyproxy-docker-compose.yml.j2 dest={{ shinyproxy_as_docker_src_dir }}/docker-shinyproxy-stack.yml
 
@@ -44,6 +39,7 @@
       compose:
         - '{{ shinyproxy_as_docker_src_dir }}/docker-shinyproxy-stack.yml'
 
+  run_once: True
   when:
     - docker_swarm_manager_main_node is defined and docker_swarm_manager_main_node | bool
     - shinyproxy_container_backend == 'docker-swarm'

templates/shinyproxy-docker-compose.yml.j2

@@ -7,6 +7,9 @@ networks:
 {% endif %}
   {{ shinyproxy_docker_network }}:
 
+configs:
+  shinyproxy_conf:
+    file: {{ shinyproxy_as_docker_src_dir }}/application.yml
 services:
   shinyproxy:
 {% if shinyproxy_container_backend == 'docker' %}
@@ -18,7 +21,10 @@ services:
 {% endif %}
     volumes:
       - /var/run/docker.sock:/var/run/docker.sock
-      - {{ shinyproxy_as_docker_src_dir }}/application.yml:/opt/shinyproxy/application.yml:ro
+    configs:
+      - source: shinyproxy_conf
+        target: /opt/shinyproxy/application.yml
+        mode: 0400
     networks:
       - {{ shinyproxy_docker_network }}
 {% if shinyproxy_container_backend == 'docker-swarm' %}