Add capabilities and -ports flag (#6)

* Add caps and -ports flag

* Remove unneeded DAC_OVERRIDE cap

* Remove unnecessary cap from uuid-annotator.

examples/ndt-fullstack.yml

@@ -14,6 +14,7 @@ services:
       - -iata=${IATA}
       - -output=/autonode
       - -healthcheck-addr=:8001
+      - -ports=9990,9991,9992,9993
     healthcheck:
       test: ["CMD", "curl", "-f", "http://localhost:8001/ready"]
       interval: 3s
@@ -32,6 +33,8 @@ services:
       - ./autocert:/autocert
     cap_drop:
       - ALL
+    cap_add:
+      - NET_BIND_SERVICE
     depends_on:
       generate-schemas-ndt7:
         condition: service_completed_successfully