Docker UDP port mapping correct in toml? (itzg/minecraft-bedrock-server)

Similar to this thread, I’m trying to deploy a minecraft dockerfile, but in this case for the bedrock flavor. I’m using this Dockerfile and this fly.toml:

app = "minecraft-wrights"
kill_signal = "SIGINT"
kill_timeout = 60
processes = []

  GAMEMODE = "creative"


  allowed_public_ports = [19132, 19133]
  auto_rollback = false

  internal_port = 19132
  protocol = "udp"

    port = 19132

  internal_port = 19133
  protocol = "udp"

    port = 19133

The logs show it’s running but I can’t connect. The main difference I see is that the bedrock docs have udp appended to the docker run mapping like: -p 19132:19132/udp, but I’m not sure how that translates to fly.toml.

I have been looking at the same thing - but as far as I am aware - has always required UDP programs to map to a different address: fly-global-services (link: Running Apps On UDP and TCP · Fly Docs).

The bedrock docker image (or the underlying bedrock-server binary) doesn’t seem to support binding to a custom address (link:

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