Use port env when present.

[ushieru]

Use port env by default when present.

https://github.com/pocketbase/pocketbase/blob/20653ef786db55dc77ad13461a659a0e5a960083/cmd/serve.go#L33C1-L37C5.

if len(args) > 0 {
        if httpAddr == "" {
                httpAddr = "0.0.0.0:80"
        }
        if httpsAddr == "" {
                httpsAddr = "0.0.0.0:443"
        }
} else {
        if port := os.Getenv("PORT"); port != "" {
        httpAddr = "0.0.0.0:" + port
    } else httpAddr == "" {
            httpAddr = "127.0.0.1:8090"
        }
}

This can help make it easier to deploy with docker on platforms that give us a random port.

[ganigeorgiev]

I don't think there is need for magic env variables. To specify a server address you can use the --http and --https flags. Env variables will require also extra documentation and could result in collisions if we don't prefix them.