fix: keep env.list alive with background goroutine during setup.sh

internal/native/native.go

@@ -6,6 +6,7 @@ import (
 	"os/exec"
 	"path/filepath"
 	"strings"
+	"time"
 
 	"git.sechpoint.app/customer-engineering/wallarm/internal/state"
 )
@@ -61,15 +62,25 @@ func InstallNode(node state.Node, apiToken, apiHost, labels string) error {
 		return fmt.Errorf("extract: %w\n%s", err, string(out))
 	}
 
-	// 5. Patch setup.sh: make env.list sed commands non-fatal (file gets deleted during nginx test)
-	setupPath := filepath.Join(DeployTo, "setup.sh")
-	exec.Command("sed", "-i",
-		`s|\(/opt/wallarm/env.list\)|\1 2>/dev/null || true|g`,
-		setupPath).Run()
+	// 5. Fix: recreate env.list in background while setup.sh runs
+	done := make(chan struct{})
+	go func() {
+		defer close(done)
+		for {
+			select {
+			case <-done:
+				return
+			default:
+				os.WriteFile(filepath.Join(DeployTo, "env.list"),
+					[]byte("# wallarm env\n"), 0644)
+				time.Sleep(500 * time.Millisecond)
+			}
+		}
+	}()
 
 	// 6. Run setup.sh
 	fmt.Printf("[%s] Running setup...\n", node.Name)
-	cmd = exec.Command("bash", setupPath,
+	cmd = exec.Command("bash", filepath.Join(DeployTo, "setup.sh"),
 		"--batch", "--token", apiToken, "--cloud", cloudFromHost(apiHost),
 		"--custom-ngx-build",
 	)
@@ -81,6 +92,7 @@ func InstallNode(node state.Node, apiToken, apiHost, labels string) error {
 		cmd.Stderr = logFile
 	}
 	runErr := cmd.Run()
+	close(done) // stop env.list keeper
 	if logFile != nil {
 		logFile.Close()
 	}