From 8107e7110ce83a29717877738d991fb8a84c9bbf Mon Sep 17 00:00:00 2001
From: Antonio Ojea <aojea@google.com>
Date: Fri, 13 Dec 2024 06:54:17 +0000
Subject: [PATCH] add nerdctl/finch support

Change-Id: I238214041e56d17dee8e15e58cd416300c506f44
---
 pkg/container/container.go | 23 +++++++++++++++++++++++
 1 file changed, 23 insertions(+)

diff --git a/pkg/container/container.go b/pkg/container/container.go
index 68412fd2..e2464aaf 100644
--- a/pkg/container/container.go
+++ b/pkg/container/container.go
@@ -32,7 +32,21 @@ func podmanIsAvailable() bool {
 		return false
 	}
 	return strings.HasPrefix(lines[0], "podman version")
+}
 
+func nerdctlIsAvailable() bool {
+	cmd := kindexec.Command("nerdctl", "-v")
+	lines, err := kindexec.OutputLines(cmd)
+	if err != nil || len(lines) != 1 {
+		// check finch
+		cmd = kindexec.Command("finch", "-v")
+		lines, err = kindexec.OutputLines(cmd)
+		if err != nil || len(lines) != 1 {
+			return false
+		}
+		return strings.HasPrefix(lines[0], "finch version")
+	}
+	return strings.HasPrefix(lines[0], "nerdctl version")
 }
 
 func init() {
@@ -41,6 +55,15 @@ func init() {
 	}
 	if podmanIsAvailable() {
 		containerRuntime = "podman"
+		return
+	}
+	if nerdctlIsAvailable() {
+		containerRuntime = "nerdctl"
+		if _, err := exec.LookPath("nerdctl"); err != nil {
+			if _, err := exec.LookPath("finch"); err == nil {
+				containerRuntime = "finch"
+			}
+		}
 	}
 }