feat: Update README and add requirements.txt for rich library installation instructions

docker-manager/README.md

@@ -18,10 +18,11 @@ A Python command-line application to manage Docker containers defined in subdire
 
 - Python 3
 - Docker and Docker Compose (plugin) installed.
-- The `rich` Python library:
+- Python dependencies:
   ```bash
-  pip install rich
+  pip install -r ~/shell/docker-manager/requirements.txt
   ```
+  *Or manually:* `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.
 

docker-manager/docker-manager.py

@@ -37,11 +37,17 @@ import argparse
 import subprocess
 import json
 from pathlib import Path
+
+try:
     from rich.console import Console
     from rich.table import Table
     from rich.panel import Panel
-from rich.text import Text
     from rich import box
+except ImportError:
+    print("Error: The 'rich' library is required but not installed.")
+    print("Please install it using: pip install -r ~/shell/docker-manager/requirements.txt")
+    print("Or directly: pip install rich")
+    exit(1)
 
 # Configuration
 DOCKER_ROOT = Path(os.path.expanduser("~/docker"))
@@ -261,14 +267,14 @@ def list_containers(projects):
                             update_status = "[dim]Not Monitored[/dim]"
 
                     # If version is still unknown, try to get from running container labels
-                    if version == "latest" or version == "unknown":
+                    if version in ("latest", "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:
+                            except Exception:
                                 pass
 
                     table.add_row(name, c_name, state, image, version, update_status)

docker-manager/requirements.txt

@@ -0,0 +1 @@
+rich>=13.0.0