fix: properly translate mips arch (#2126)

Signed-off-by: Carlos Alexandro Becker <caarlos0@gmail.com>

internal/linux/arch.go

@@ -6,7 +6,10 @@ import "strings"
 // Arch converts a goarch to a linux-compatible arch.
 func Arch(key string) string {
 	// XXX: list of all linux arches: `go tool dist list | grep linux`
-	var arch = strings.TrimPrefix(key, "linux")
+	arch := strings.TrimPrefix(key, "linux")
+	for _, suffix := range []string{"hardfloat", "softfloat"} {
+		arch = strings.TrimSuffix(arch, suffix)
+	}
 	switch arch {
 	case "386":
 		return "i386"
@@ -18,7 +21,10 @@ func Arch(key string) string {
 		return "armhf"
 	case "arm7": // GOARCH + GOARM
 		return "armhf"
-	default:
-		return arch
+	case "mips64le":
+		return "mips64el"
+	case "mipsle":
+		return "mipsel"
 	}
+	return arch
 }

internal/linux/arch_test.go

@@ -9,15 +9,19 @@ import (
 
 func TestArch(t *testing.T) {
 	for from, to := range map[string]string{
-		"linuxamd64":   "amd64",
-		"linux386":     "i386",
-		"linuxarm64":   "arm64",
-		"linuxarm5":    "armel",
-		"linuxarm6":    "armhf",
-		"linuxarm7":    "armhf",
-		"linuxppc64":   "ppc64",
-		"linuxppc64le": "ppc64le",
-		"linuxwhat":    "what",
+		"linuxamd64":             "amd64",
+		"linux386":               "i386",
+		"linuxarm64":             "arm64",
+		"linuxarm5":              "armel",
+		"linuxarm6":              "armhf",
+		"linuxarm7":              "armhf",
+		"linuxppc64":             "ppc64",
+		"linuxppc64le":           "ppc64le",
+		"linuxwhat":              "what",
+		"linuxmips64lesoftfloat": "mips64el",
+		"linuxmipslehardfloat":   "mipsel",
+		"linuxmipssoftfloat":     "mips",
+		"linuxmips64hardfloat":   "mips64",
 	} {
 		t.Run(fmt.Sprintf("%s to %s", from, to), func(t *testing.T) {
 			require.Equal(t, to, Arch(from))