added logic for containers without volumes

podman/files/container.sh.jinja

@@ -7,6 +7,7 @@ function pull_image(){
 
 }
 
+{% if pillar['containers'][container]['volumes'] is defined %}
 function create_volumes() {
 {% for volume, mounts in args['volumes'].items() -%}
     if ! podman volume exists {{ container }}-{{ volume }}; then
@@ -14,6 +15,7 @@ function create_volumes() {
     fi
 {% endfor %}
 }
+{% endif %}
 
 function create_container() {
     if ! podman container exists {{ container }};then