feat(ui): sidebar kontainer + panel detail (ListContainers, navigasi j/k, klik pilih, refresh r)

internal/docker/client.go

@@ -5,7 +5,9 @@ package docker
 import (
 	"context"
 	"fmt"
+	"strings"
 
+	"github.com/docker/docker/api/types/container"
 	"github.com/docker/docker/client"
 )
 
@@ -60,3 +62,39 @@ func (c *Client) Ping(ctx context.Context) error {
 	}
 	return nil
 }
+
+// Container — ringkasan kontainer untuk sidebar/dashboard.
+type Container struct {
+	ID     string
+	Name   string
+	Image  string
+	State  string // running, exited, paused, restarting, created, dead
+	Status string // "Up 2 hours (healthy)"
+}
+
+// ListContainers mengembalikan semua kontainer (termasuk yang berhenti).
+func (c *Client) ListContainers(ctx context.Context) ([]Container, error) {
+	list, err := c.cli.ContainerList(ctx, container.ListOptions{All: true})
+	if err != nil {
+		return nil, fmt.Errorf("docker: daftar kontainer: %w", err)
+	}
+	out := make([]Container, 0, len(list))
+	for _, ct := range list {
+		name := ""
+		if len(ct.Names) > 0 {
+			name = strings.TrimPrefix(ct.Names[0], "/")
+		}
+		id := ct.ID
+		if len(id) > 12 {
+			id = id[:12]
+		}
+		out = append(out, Container{
+			ID:     id,
+			Name:   name,
+			Image:  ct.Image,
+			State:  ct.State,
+			Status: ct.Status,
+		})
+	}
+	return out, nil
+}