fix(e2e): set longer timeout for docker

test/e2e/helm.go

@@ -10,6 +10,7 @@ import (
 	"path/filepath"
 	"strings"
 	"testing"
+	"time"
 )
 
 const (
@@ -21,12 +22,14 @@ type HelmContext struct {
 	t       *testing.T
 	Path    string
 	Host    string
+	Timeout time.Duration
 }
 
 func NewHelmContext(t *testing.T) *HelmContext {
 	return &HelmContext{
 		t:       t,
 		Path:    RepoRoot() + "/bin/helm",
+		Timeout: time.Second * 20,
 	}
 }