Publish multiple ports for Dockerfile app

Questions / Help
1

I want to publish multiple ports for my app that is built from a Dockerfile using flyctl deploy. As far as I know, we don’t have access to the docker run command, if I did I believe I would want it to look like this:
docker run -p 80:80 -p 443:443 -p 10001:2019 my-app-image

How can I accomplish this?

Below is my fly.toml:

app = "my-app"

[mounts]
destination = "/config"
source = "config"

# port 80 mapping
[[services]]
internal_port = 80
protocol = "tcp"

[[services.ports]]
port = "80"

# port 443 mapping
[[services]]
internal_port = 443
protocol = "tcp"

[[services.ports]]
port = "443"

# port 2019 mapping
[[services]]
internal_port = 2019
protocol = "tcp"

[[services.ports]]
port = "10001"
2

Assuming you want multiple ports open publicly, that fly.toml looks correct. Is it not working? You may need to give it a few minutes after a deploy when ports change.

If you just want ports available over the private network, you don’t have to do anything. Anything you listen on in the container works.

3

So the docker run command that runs looks at the toml file to determine what ports to publish on the docker image?

4

If I understand what you’re asking right, yes. The fly deploy command sends the config. We use the [[services]] to block configure our load balancer for your app. The load balancer sends traffic in the defined ports to all instances of your application.

The EXPOSE and -p args Docker uses don’t really mean anything in our environment. They control how Docker sets up IP tables rules to forward ports on a local system.