Add fallback for busybox hostname with wsl2

Signed-off-by: Anders F Björklund <[email protected]>

Author: afbjorklund

pkg/store/instance_windows.go

@@ -121,11 +121,26 @@ func GetWslStatus(instName string) (string, error) {
 // Expected output (whitespace preserved, [] for optional):
 // PS > wsl -d <distroName> bash -c hostname -I | cut -d' ' -f1
 // 168.1.1.1 [10.0.0.1]
+// But busybox hostname does not implement --all-ip-addresses:
+// hostname: unrecognized option: I
 func GetSSHAddress(instName string) (string, error) {
 	distroName := "lima-" + instName
+	// Ubuntu
 	cmd := exec.Command("wsl.exe", "-d", distroName, "bash", "-c", `hostname -I | cut -d ' ' -f1`)
 	out, err := cmd.CombinedOutput()
-	if err != nil {
+	if err == nil {
+		return strings.TrimSpace(string(out)), nil
+	}
+	// Alpine
+	cmd = exec.Command("wsl.exe", "-d", distroName, "sh", "-c", `ip route get 1 | awk '{gsub("^.*src ",""); print $1; exit}'`)
+	out, err = cmd.CombinedOutput()
+	if err == nil {
+		return strings.TrimSpace(string(out)), nil
+	}
+	// fallback
+	cmd = exec.Command("wsl.exe", "-d", distroName, "hostname", "-i")
+	out, err = cmd.CombinedOutput()
+	if err != nil || strings.HasPrefix(string(out), "127.") {
 		return "", fmt.Errorf("failed to get hostname for instance %q, err: %w (out=%q)", instName, err, string(out))
 	}