feat: add docker_container widget type

ethica-agent.py

@@ -285,6 +285,27 @@ def run_widget(w: dict) -> tuple:
         alive = process_alive(proc)
         return name, "system", "online" if alive else "offline", None, "", proc
 
+    if wtype == "docker_container":
+        container = w.get("container", "")
+        if not container:
+            return name, "container", "unknown", None, "", "no container name"
+        try:
+            r = subprocess.run(
+                ["docker", "inspect", "--format", "{{.State.Status}}", container],
+                capture_output=True, text=True, timeout=10)
+            st = r.stdout.strip().lower()
+            if st == "running":
+                status = "online"
+            elif st in ("restarting", "paused"):
+                status = "degraded"
+            else:
+                status = "offline"
+        except FileNotFoundError:
+            st, status = "docker not found", "offline"
+        except subprocess.TimeoutExpired:
+            st, status = "timeout", "offline"
+        return name, "container", status, None, "", st
+
     if wtype == "custom_cmd":
         cmd = w["cmd"]
         timeout = w.get("timeout", 30)