Deploy a Go service

package main

import (
	"net/http"
	"os"
)

func main() {
	port := os.Getenv("PORT")
	if port == "" {
		port = "8080"
	}
	http.HandleFunc("/healthz", func(w http.ResponseWriter, r *http.Request) {
		w.Write([]byte("ok"))
	})
	http.ListenAndServe("0.0.0.0:"+port, nil)
}

version: 1

services:
  - name: api
    runtime: go
    runtimeVersion: "1.24"
    ports:
      - port: 8080
        public: true
    healthCheckPath: /healthz
    env:
      PORT: "8080"

    buildCommand: go build -ldflags="-s -w" -o /out/app ./cmd/api

databases:
  - name: db
    engine: postgres
    diskSizeGB: 10

services:
  - name: api
    runtime: go
    env:
      DATABASE_URL: ${service.db.url}

    preDeploy: ["/app", "migrate"]

  - name: worker
    type: worker
    runtime: go
    runtimeVersion: "1.24"
    buildCommand: go build -o /out/app ./cmd/worker
    env:
      DATABASE_URL: ${service.db.url}