ansible-playbook: fixed invalid keyword

ansible-playbook.yml

@@ -12,7 +12,7 @@
         OR_PORT: '{{ or_port }}'
         PT_PORT: '{{ pt_port }}'
         CONTACT_INFO: '{{ contact_info }}'
-      publish:
+      ports:
       - '{{ or_port }}:{{ or_port }}'
       - '{{ pt_port }}:{{ pt_port }}'
       memory: 128M