Allow setting container entrypoint

roles/service/meta/argument_specs.yaml

@@ -14,6 +14,11 @@ argument_specs:
         required: false
         default: []
         elements: str
+      service_container_entrypoint:
+        description: Entrypoint to use in the service container
+        type: str
+        required: false
+        default: ""
 
       service_domains:
         description: A list of domains which should be proxied to the main service container
@@ -304,6 +309,11 @@ argument_specs:
             required: false
             default: "[]"
             elements: str
+          entrypoint:
+            description: Entrypoint to use in the container
+            type: str
+            required: false
+            default: ""
           mounts:
             description: List of bind mounts or volumes to be mounted inside the main service container.
             type: list