agent v0.3.8: fix crash UI notifications, auto Podman machine DNS, WordPress 7.0.0 ready template

agent/podman.go

@@ -0,0 +1,65 @@
+package main
+
+import (
+	"encoding/json"
+	"fmt"
+	"log"
+	"os/exec"
+	"runtime"
+)
+
+type podmanMachine struct {
+	Name    string `json:"name"`
+	Running bool   `json:"running"`
+	VMType  string `json:"vm_type"`
+}
+
+// ensurePodmanMachineDNS configures public DNS resolvers on running Podman
+// machines on Windows and macOS. This is required because the Podman VM does
+// not always inherit a working DNS from the host, which prevents pulling
+// images and reaching api.wordpress.org from containers.
+func ensurePodmanMachineDNS() {
+	if runtime.GOOS != "windows" && runtime.GOOS != "darwin" {
+		return
+	}
+	if getContainerEngine() != "podman" {
+		return
+	}
+
+	out, err := exec.Command("podman", "machine", "list", "--format", "json").Output()
+	if err != nil {
+		log.Printf("ensurePodmanMachineDNS: cannot list machines: %v", err)
+		return
+	}
+
+	var machines []podmanMachine
+	if err := json.Unmarshal(out, &machines); err != nil {
+		log.Printf("ensurePodmanMachineDNS: cannot parse machine list: %v", err)
+		return
+	}
+
+	for _, m := range machines {
+		if !m.Running {
+			continue
+		}
+		if err := configurePodmanMachineDNS(m.Name); err != nil {
+			log.Printf("ensurePodmanMachineDNS: failed for %s: %v", m.Name, err)
+		} else {
+			log.Printf("ensurePodmanMachineDNS: DNS configured for %s", m.Name)
+		}
+	}
+}
+
+func configurePodmanMachineDNS(name string) error {
+	cmd := exec.Command(
+		"podman", "machine", "ssh", name,
+		"sudo", "sh", "-c",
+		"echo nameserver 8.8.8.8 > /etc/resolv.conf && echo nameserver 1.1.1.1 >> /etc/resolv.conf",
+	)
+	hideWindow(cmd)
+	out, err := cmd.CombinedOutput()
+	if err != nil {
+		return fmt.Errorf("%w: %s", err, string(out))
+	}
+	return nil
+}