Mount of the docker socket is optional.

defaults/main.yml

@@ -4,6 +4,7 @@
 # https://github.com/openanalytics/shinyproxy-config-examples
 shinyproxy_install: true
 shinyproxy_as_docker_service: false
+shinyproxy_docker_privileged_user: false
 shinyproxy_major_ver: 3
 shinyproxy_minor_ver: 0
 shinyproxy_patch_ver: 2

templates/shinyproxy-docker-compose.yml.j2

@@ -44,7 +44,9 @@ services:
 {% endif %}
 {% endif %}
     volumes:
+{% if shinyproxy_docker_privileged_user %}
       - /var/run/docker.sock:/var/run/docker.sock
+{% endif %}
 {% if shinyproxy_docker_mount_conf_file %}
       - {{ shinyproxy_as_docker_src_dir }}/application.yml:{{ shinyproxy_conf_dir }}/application.yml
 {% endif %}