Is there any possibility to publish package directly to packeton?

[malinink]

I assume that flow:

• i have a package
• i want to PUT that package directly into packeton repo
• i run command from my repo like: composer push --username=admin --password=123456 0.0.1

Result:
expected package successfully registered on my repo
but having: Client error: PUT http://localhost:8088/packages/upload/org/mypackagename/0.0.1 resulted in a 404 Not Found

extra config in my package:

  "extra": {
    "push": {
      "url": "http://localhost:8088/"
    }
  },

P.S. we are interested in changing nexus to something supporting only composer packages. May be packeton is not a replacement.