Golang range with a map[string] is non-deterministic

main.go

package main

import (
	"fmt"
)

func main() {
	subcharts := make(map[string][]string)
	for i := 1; i < 4; i++ {
		cname := fmt.Sprintf("package-%d.0.0.tgz", i)
		subcharts[cname] = append(subcharts[cname], fmt.Sprintf("package%d.yml", i))
	}
	fmt.Printf("Subcharts: %v\n", subcharts)
	for n, files := range subcharts {
		fmt.Printf("Looking at %s - Chart: %s\n", n, files)
	}

}

output

$ go run main.go
Subcharts: map[package-1.0.0.tgz:[package1.yml] package-2.0.0.tgz:[package2.yml] package-3.0.0.tgz:[package3.yml]]
Looking at package-1.0.0.tgz - Chart: [package1.yml]
Looking at package-2.0.0.tgz - Chart: [package2.yml]
Looking at package-3.0.0.tgz - Chart: [package3.yml]
$ go run main.go
Subcharts: map[package-1.0.0.tgz:[package1.yml] package-2.0.0.tgz:[package2.yml] package-3.0.0.tgz:[package3.yml]]
Looking at package-1.0.0.tgz - Chart: [package1.yml]
Looking at package-2.0.0.tgz - Chart: [package2.yml]
Looking at package-3.0.0.tgz - Chart: [package3.yml]
$ go run main.go
Subcharts: map[package-1.0.0.tgz:[package1.yml] package-2.0.0.tgz:[package2.yml] package-3.0.0.tgz:[package3.yml]]
Looking at package-2.0.0.tgz - Chart: [package2.yml]
Looking at package-3.0.0.tgz - Chart: [package3.yml]
Looking at package-1.0.0.tgz - Chart: [package1.yml]
$ go run main.go
Subcharts: map[package-1.0.0.tgz:[package1.yml] package-2.0.0.tgz:[package2.yml] package-3.0.0.tgz:[package3.yml]]
Looking at package-1.0.0.tgz - Chart: [package1.yml]
Looking at package-2.0.0.tgz - Chart: [package2.yml]
Looking at package-3.0.0.tgz - Chart: [package3.yml]