docs: Update README to enhance feature descriptions and add usage examples for Docker Manager

docker-manager/README.md

@@ -4,9 +4,12 @@ A Python command-line application to manage Docker containers defined in subdire
 
 ## Features
 
+- **Rich UI**: Beautiful terminal output using the `rich` library, including tables, panels, and colored status indicators.
 - **List**: View currently running containers across all your projects.
-- **Describe**: Show detailed information about containers in a specific project, including descriptions.
-- **Volumes**: List volumes used by a specific project.
+  - **Diun Integration**: Automatically detects if [Diun](https://github.com/crazy-max/diun) is running and displays image versions and update availability directly in the list.
+- **Describe**: Show detailed information about containers in a specific project, including descriptions, ports, and a formatted table of volumes.
+- **Volumes**: List all volumes used by a specific project with source and destination details.
+- **Logs**: View logs for a project, with options to follow, tail, and **filter by specific container/service**.
 - **Stop**: Stop containers for a specific project or all projects.
 - **Update**: Pull the latest images and recreate containers (equivalent to `docker compose pull && docker compose up -d`).
 - **Restart**: Restart containers for a specific project or all projects.
@@ -15,6 +18,10 @@ A Python command-line application to manage Docker containers defined in subdire
 
 - Python 3
 - Docker and Docker Compose (plugin) installed.
+- The `rich` Python library:
+  ```bash
+  pip install rich
+  ```
 - A `~/docker/` directory containing subdirectories for each of your projects.
 - Each project subdirectory must contain a `docker-compose.yml`, `docker-compose.yaml`, `compose.yml`, or `compose.yaml` file.
 
@@ -46,10 +53,34 @@ A Python command-line application to manage Docker containers defined in subdire
 Run the application using the command name you set up (e.g., `dm`).
 
 ### List Running Containers
+Displays a table with Project, Container Name, State, Image, Version, and Update Status.
 ```bash
 dm list
 ```
 
+### Describe Project
+Show detailed info (Service, Image, State, Ports, Description, Volumes) for a project.
+```bash
+dm describe project_name
+```
+
+### List Volumes
+Show a table of all volumes (Bind mounts and named volumes) for a project.
+```bash
+dm volumes project_name
+```
+
+### View Logs
+View logs for a project.
+```bash
+dm logs project_name
+```
+**Options:**
+- Follow output: `dm logs project_name -f`
+- Tail specific number of lines: `dm logs project_name --tail 100`
+- **Filter by container**: `dm logs project_name container_name`
+  - Example: `dm logs media gluetun --tail 50`
+
 ### Stop Containers
 Stop a specific project:
 ```bash

docker-manager/docker-manager.py

@@ -37,9 +37,92 @@ import argparse
 import subprocess
 import json
 from pathlib import Path
+from rich.console import Console
+from rich.table import Table
+from rich.panel import Panel
+from rich.text import Text
+from rich import box
 
 # Configuration
 DOCKER_ROOT = Path(os.path.expanduser("~/docker"))
+console = Console()
+
+
+def get_diun_container_name():
+    """Find the running diun container name."""
+    # Try to find by image name first (most reliable if standard image is used)
+    cmd = ["docker", "ps", "--filter", "ancestor=crazymax/diun", "--format", "{{.Names}}"]
+    res = subprocess.run(cmd, capture_output=True, text=True)
+    if res.returncode == 0 and res.stdout.strip():
+        return res.stdout.strip().split('\n')[0]
+    
+    # Fallback to finding by name containing 'diun'
+    cmd = ["docker", "ps", "--filter", "name=diun", "--format", "{{.Names}}"]
+    res = subprocess.run(cmd, capture_output=True, text=True)
+    if res.returncode == 0 and res.stdout.strip():
+        return res.stdout.strip().split('\n')[0]
+        
+    return None
+
+
+def get_diun_info():
+    """Fetch image information from Diun."""
+    diun_info = {}
+    try:
+        diun_container = get_diun_container_name()
+        
+        if not diun_container:
+            return diun_info
+
+        # Get diun image list
+        cmd = ["docker", "exec", diun_container, "diun", "image", "list", "--raw"]
+        res = subprocess.run(cmd, capture_output=True, text=True)
+        
+        if res.returncode != 0:
+            return diun_info
+
+        data = json.loads(res.stdout)
+        for img in data.get("images", []):
+            name = img.get("name", "")
+            latest = img.get("latest", {})
+            digest = latest.get("digest", "")
+            labels = latest.get("labels", {})
+            
+            # Normalize name for matching
+            # Remove docker.io/ prefix
+            norm_name = name
+            if norm_name.startswith("docker.io/"):
+                norm_name = norm_name[10:]
+            
+            # If no registry (no /), prepend library/
+            if "/" not in norm_name:
+                norm_name = f"library/{norm_name}"
+                
+            diun_info[norm_name] = {
+                "digest": digest,
+                "labels": labels,
+                "tag": latest.get("tag", ""),
+                "original_name": name
+            }
+            
+    except (subprocess.CalledProcessError, json.JSONDecodeError):
+        pass
+        
+    return diun_info
+
+
+def get_image_version(labels):
+    """Extract version from image labels."""
+    version_keys = [
+        "org.opencontainers.image.version",
+        "version",
+        "org.label-schema.version",
+        "build_version"
+    ]
+    for key in version_keys:
+        if key in labels:
+            return labels[key]
+    return "latest"
 
 
 def get_projects():
@@ -80,26 +163,88 @@ def run_command(cmd, cwd, capture_output=False):
 
 def list_containers(projects):
     """List running containers for all projects."""
-    print(f"{'Project':<20} | {'Container Name':<40} | {'State':<10}")
-    print("-" * 75)
+    table = Table(title="Docker Containers", box=box.ROUNDED)
+    table.add_column("Project", style="cyan", no_wrap=True)
+    table.add_column("Container Name", style="green")
+    table.add_column("State", style="yellow")
+    table.add_column("Image", style="blue")
+    table.add_column("Version", style="magenta")
+    table.add_column("Update", style="red")
+
+    # Get Diun info once
+    diun_info = get_diun_info()
 
     found_any = False
     for name, path in sorted(projects.items()):
         # Get running container names
-        cmd = ["docker", "compose", "ps", "--format",
-               "{{.Names}}", "--filter", "status=running"]
+        cmd = ["docker", "compose", "ps", "--format", "json"]
         res = run_command(cmd, path, capture_output=True)
 
         if res and res.returncode == 0:
-            containers = res.stdout.strip().split('\n')
-            containers = [c for c in containers if c]  # filter empty
-            if containers:
-                found_any = True
-                for container in containers:
-                    print(f"{name:<20} | {container:<40} | Running")
+            lines = res.stdout.strip().split('\n')
+            for line in lines:
+                if not line:
+                    continue
+                try:
+                    container = json.loads(line)
+                    c_name = container.get('Name', '')
+                    state = container.get('State', '')
+                    image = container.get('Image', '')
                     
-    if not found_any:
-        print("No running containers found in managed projects.")
+                    if not c_name:
+                        continue
+                        
+                    found_any = True
+                    
+                    # Get version and update status
+                    version = "unknown"
+                    update_status = ""
+                    
+                    # Normalize image name for lookup
+                    norm_image = image
+                    if norm_image.startswith("docker.io/"):
+                        norm_image = norm_image[10:]
+                    if "/" not in norm_image:
+                        norm_image = f"library/{norm_image}"
+                    
+                    # Check Diun info
+                    if norm_image in diun_info:
+                        info = diun_info[norm_image]
+                        # Try to get version from Diun labels first
+                        version = get_image_version(info.get("labels", {}))
+                        
+                        # Check for updates
+                        inspect_digest_cmd = ["docker", "inspect", c_name, "--format", "{{index .RepoDigests 0}}"]
+                        inspect_digest_res = run_command(inspect_digest_cmd, path, capture_output=True)
+                        if inspect_digest_res and inspect_digest_res.returncode == 0:
+                            running_digest_full = inspect_digest_res.stdout.strip()
+                            # running_digest is like name@sha256:hash
+                            if "@" in running_digest_full:
+                                running_digest = running_digest_full.split("@")[1]
+                                latest_digest = info.get("digest", "")
+                                if latest_digest and running_digest != latest_digest:
+                                    update_status = "Update Available"
+                    
+                    # If version is still unknown, try to get from running container labels
+                    if version == "latest" or version == "unknown":
+                         inspect_cmd = ["docker", "inspect", c_name, "--format", "{{json .Config.Labels}}"]
+                         inspect_res = run_command(inspect_cmd, path, capture_output=True)
+                         if inspect_res and inspect_res.returncode == 0:
+                             try:
+                                 labels = json.loads(inspect_res.stdout)
+                                 version = get_image_version(labels)
+                             except:
+                                 pass
+
+                    table.add_row(name, c_name, state, image, version, update_status)
+
+                except json.JSONDecodeError:
+                    pass
+
+    if found_any:
+        console.print(table)
+    else:
+        console.print("[yellow]No running containers found in managed projects.[/yellow]")
 
 
 def is_project_running(path):
@@ -117,11 +262,11 @@ def is_project_running(path):
 def describe_project(projects, target):
     """Show detailed information about containers in a project."""
     if target not in projects:
-        print(f"Error: Project '{target}' not found.")
+        console.print(f"[red]Error: Project '{target}' not found.[/red]")
         return
 
     path = projects[target]
-    print(f"Describing project: {target}")
+    console.print(Panel(f"[bold blue]Describing project: {target}[/bold blue]", expand=False))
 
     cmd = ["docker", "compose", "ps", "--format", "json"]
     res = run_command(cmd, path, capture_output=True)
@@ -136,79 +281,88 @@ def describe_project(projects, target):
                 container = json.loads(line)
                 found_any = True
                 name = container.get('Name', 'N/A')
-                print("-" * 60)
-                print(f"Service:     {container.get('Service', 'N/A')}")
-                print(f"Container:   {name}")
-                print(f"Image:       {container.get('Image', 'N/A')}")
-                print(f"State:       {container.get('State', 'N/A')}")
-                print(f"Status:      {container.get('Status', 'N/A')}")
+                
+                # Create a table for this container
+                table = Table(show_header=False, box=box.SIMPLE)
+                table.add_column("Field", style="bold cyan")
+                table.add_column("Value")
+                
+                table.add_row("Service", container.get('Service', 'N/A'))
+                table.add_row("Container", name)
+                table.add_row("Image", container.get('Image', 'N/A'))
+                table.add_row("State", container.get('State', 'N/A'))
+                table.add_row("Status", container.get('Status', 'N/A'))
 
                 ports = container.get('Ports', '')
                 if ports:
-                    print(f"Ports:       {ports}")
+                    table.add_row("Ports", ports)
 
-                # Get details via inspect for better parsing (Labels and Mounts)
+                # Get details via inspect
                 inspect_cmd = ["docker", "inspect", name, "--format", "{{json .}}"]
                 inspect_res = run_command(inspect_cmd, path, capture_output=True)
                 if inspect_res and inspect_res.returncode == 0:
                     try:
                         details = json.loads(inspect_res.stdout.strip())
                         
-                        # Description from labels
+                        # Description
                         labels = details.get("Config", {}).get("Labels", {})
                         description = labels.get("org.opencontainers.image.description")
                         if description:
-                            print(f"Description: {description}")
+                            table.add_row("Description", description)
+
+                        console.print(Panel(table, title=f"[bold]{name}[/bold]", border_style="green"))
 
                         # Volumes/Mounts
                         mounts = details.get("Mounts", [])
                         if mounts:
-                            print("Volumes:")
-                            print(f"  {'Name/Type':<20} | {'Source (Local Path)':<50} | {'Destination'}")
-                            print(f"  {'-'*20} | {'-'*50} | {'-'*20}")
+                            v_table = Table(title="Volumes", box=box.MINIMAL)
+                            v_table.add_column("Type", style="cyan")
+                            v_table.add_column("Source", style="yellow")
+                            v_table.add_column("Destination", style="green")
+                            
                             for mount in mounts:
                                 m_type = mount.get("Type")
-                                vol_name = mount.get("Name", "")
                                 source = mount.get("Source", "")
                                 dest = mount.get("Destination", "")
+                                v_table.add_row(m_type, source, dest)
                             
-                                # If it's a bind mount, use "Bind" as name, otherwise use volume name
-                                display_name = vol_name if vol_name else f"[{m_type}]"
-                                
-                                # Truncate source if too long for cleaner display, or just let it wrap?
-                                # Let's just print it.
-                                print(f"  {display_name:<20} | {source:<50} | {dest}")
+                            console.print(v_table)
+                            console.print("") # Spacing
 
                     except json.JSONDecodeError:
                         pass
+                else:
+                     console.print(Panel(table, title=f"[bold]{name}[/bold]", border_style="green"))
 
             except json.JSONDecodeError:
                 pass
         
         if not found_any:
-            print("No containers found for this project.")
+            console.print("[yellow]No containers found for this project.[/yellow]")
     else:
-        print("Failed to get container info.")
+        console.print("[red]Failed to get container info.[/red]")
 
 
 def list_project_volumes(projects, target):
     """List volumes used by containers in a project."""
     if target not in projects:
-        print(f"Error: Project '{target}' not found.")
+        console.print(f"[red]Error: Project '{target}' not found.[/red]")
         return
 
     path = projects[target]
-    print(f"Volumes for project: {target}")
-    print("-" * 100)
-    print(f"{'Service':<20} | {'Type':<10} | {'Name/Source':<40} | {'Destination'}")
-    print("-" * 100)
+    
+    table = Table(title=f"Volumes for project: {target}", box=box.ROUNDED)
+    table.add_column("Service", style="cyan")
+    table.add_column("Container", style="blue")
+    table.add_column("Type", style="magenta")
+    table.add_column("Source", style="yellow")
+    table.add_column("Destination", style="green")
 
     cmd = ["docker", "compose", "ps", "--format", "json"]
     res = run_command(cmd, path, capture_output=True)
 
     if res and res.returncode == 0:
         lines = res.stdout.strip().split('\n')
-        found_any = False
         for line in lines:
             if not line:
                 continue
@@ -217,7 +371,6 @@ def list_project_volumes(projects, target):
                 name = container.get('Name', 'N/A')
                 service = container.get('Service', 'N/A')
                 
-                # Get details via inspect
                 inspect_cmd = ["docker", "inspect", name, "--format", "{{json .Mounts}}"]
                 inspect_res = run_command(inspect_cmd, path, capture_output=True)
                 
@@ -225,32 +378,21 @@ def list_project_volumes(projects, target):
                     try:
                         mounts = json.loads(inspect_res.stdout.strip())
                         if mounts:
-                            found_any = True
                             for mount in mounts:
-                                m_type = mount.get("Type", "unknown")
-                                source = mount.get("Source", "")
-                                dest = mount.get("Destination", "")
-                                name_or_source = mount.get("Name", "")
-                                
-                                if m_type == "bind":
-                                    name_or_source = source
-                                elif not name_or_source:
-                                    name_or_source = source
-
-                                print(f"{service:<20} | {m_type:<10} | {name_or_source:<40} | {dest}")
+                                m_type = mount.get("Type", "N/A")
+                                source = mount.get("Source", "N/A")
+                                dest = mount.get("Destination", "N/A")
+                                table.add_row(service, name, m_type, source, dest)
+                    except json.JSONDecodeError:
+                        pass
             except json.JSONDecodeError:
                 pass
     
-            except json.JSONDecodeError:
-                pass
-        
-        if not found_any:
-            print("No volumes found for this project.")
-    else:
-        print("Failed to get container info.")
+    console.print(table)
 
 
-def manage_project(projects, action, target, extra_args=None):
+
+def manage_project(projects, action, target, extra_args=None, container_filter=None):
     """
     Execute the specified action (stop, update, restart, logs) on target project(s).
 
@@ -259,6 +401,7 @@ def manage_project(projects, action, target, extra_args=None):
         action (str): The action to perform ('stop', 'update', 'restart', 'logs').
         target (str): The target project name or 'all'.
         extra_args (list): Additional arguments for the command (e.g. for logs).
+        container_filter (str): Optional container/service name to filter logs.
     """
 
     targets = []
@@ -268,30 +411,60 @@ def manage_project(projects, action, target, extra_args=None):
     elif target in projects:
         targets = [(target, projects[target])]
     else:
-        print(f"Error: Project '{target}' not found in {DOCKER_ROOT}")
-        print("Available projects:", ", ".join(sorted(projects.keys())))
+        console.print(f"[red]Error: Project '{target}' not found in {DOCKER_ROOT}[/red]")
+        console.print(f"Available projects: {', '.join(sorted(projects.keys()))}")
         return
 
     # Logs are special, usually run on one project interactively
     if action == "logs":
         if len(targets) > 1:
-            print("Error: Logs can only be viewed for one project at a time.")
+            console.print("[red]Error: Logs can only be viewed for one project at a time.[/red]")
             return
         name, path = targets[0]
-        print(f"Viewing logs for {name}...")
+        
+        # Filter by container/service if specified
+        services_to_log = []
+        if container_filter:
+            cmd_ps = ["docker", "compose", "ps", "--format", "json"]
+            res = run_command(cmd_ps, path, capture_output=True)
+            if res and res.returncode == 0:
+                try:
+                    lines = res.stdout.strip().split('\n')
+                    for line in lines:
+                        if not line: continue
+                        c = json.loads(line)
+                        s_name = c.get('Service', '')
+                        c_name = c.get('Name', '')
+                        # Check if filter matches service or container name
+                        if container_filter in s_name or container_filter in c_name:
+                            services_to_log.append(s_name)
+                except json.JSONDecodeError:
+                    pass
+            
+            if not services_to_log:
+                console.print(f"[yellow]No matching service/container found for '{container_filter}'. Showing all logs.[/yellow]")
+            else:
+                services_to_log = list(set(services_to_log))
+                console.print(f"[blue]Showing logs for service(s): {', '.join(services_to_log)}[/blue]")
+
+        console.print(f"[blue]Viewing logs for {name}...[/blue]")
         cmd = ["docker", "compose", "logs"] + (extra_args or [])
+        
+        if services_to_log:
+            cmd.extend(services_to_log)
+
         # For logs, we want to stream output directly to stdout, so no capture_output
         # and we might want to allow Ctrl+C to exit gracefully
         try:
             subprocess.run(cmd, cwd=path, check=False)
         except KeyboardInterrupt:
-            print("\nLog view stopped.")
+            console.print("\n[yellow]Log view stopped.[/yellow]")
         return
 
-    print(f"Performing '{action}' on {len(targets)} project(s)...")
+    console.print(f"[bold]Performing '{action}' on {len(targets)} project(s)...[/bold]")
 
     for name, path in targets:
-        print(f"\n[{name}] -> {action}...")
+        console.print(f"\n[bold cyan][{name}] -> {action}...[/bold cyan]")
 
         # Execute the requested action
         if action == "stop":
@@ -305,21 +478,21 @@ def manage_project(projects, action, target, extra_args=None):
             was_running = is_project_running(path)
 
             if was_running:
-                print(f"  Stopping running containers for {name}...")
+                console.print(f"  [yellow]Stopping running containers for {name}...[/yellow]")
                 run_command(["docker", "compose", "stop"], path)
 
-            print(f"  Pulling latest images for {name}...")
+            console.print(f"  [blue]Pulling latest images for {name}...[/blue]")
             pull_res = run_command(["docker", "compose", "pull"], path)
 
             if pull_res and pull_res.returncode == 0:
                 if was_running:
-                    print(f"  Restarting containers for {name}...")
+                    console.print(f"  [green]Restarting containers for {name}...[/green]")
                     run_command(["docker", "compose", "up", "-d"], path)
                 else:
-                    print(
-                        f"  Project {name} was not running. Images updated, but not started.")
+                    console.print(
+                        f"  [green]Project {name} was not running. Images updated, but not started.[/green]")
             else:
-                print(f"  Failed to pull images for {name}. Skipping update.")
+                console.print(f"  [red]Failed to pull images for {name}. Skipping update.[/red]")
 
 
 def main():
@@ -366,6 +539,7 @@ def main():
     # Logs command configuration
     logs_parser = subparsers.add_parser("logs", help="View container logs")
     logs_parser.add_argument("project", help="Project name to view logs for")
+    logs_parser.add_argument("container", nargs="?", help="Container/Service name to filter logs (optional)")
     logs_parser.add_argument(
         "-f", "--follow", action="store_true", help="Follow log output")
     logs_parser.add_argument(
@@ -394,7 +568,7 @@ def main():
         if args.tail:
             extra_args.extend(["--tail", args.tail])
 
-        manage_project(projects, "logs", args.project, extra_args=extra_args)
+        manage_project(projects, "logs", args.project, extra_args=extra_args, container_filter=args.container)
 
     elif args.command in ["stop", "update", "restart"]:
         target = args.project