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app.py

@@ -125,6 +125,37 @@ def docker_inspect_restart_count(container_name: str) -> int:
     except Exception:
         return 0
 
+def get_container_logs(container_name: str, lines: int = 50) -> list[dict]:
+    """
+    Get last N lines of container logs with error detection.
+    Returns list of dicts with 'text' and 'level' keys.
+    """
+    try:
+        out = sh([DOCKER, "logs", "--tail", str(lines), container_name])
+        log_lines = []
+        
+        for line in out.splitlines():
+            # Strip ANSI color codes
+            line_clean = re.sub(r'\x1b\[[0-9;]*m', '', line)
+            
+            # Detect log level
+            line_lower = line_clean.lower()
+            if any(x in line_lower for x in ['error', 'exception', 'fatal', 'critical']):
+                level = 'error'
+            elif any(x in line_lower for x in ['warn', 'warning']):
+                level = 'warn'
+            else:
+                level = 'info'
+            
+            log_lines.append({
+                'text': line_clean,
+                'level': level
+            })
+        
+        return log_lines
+    except Exception:
+        return []
+
 def is_app_web_container(name: str) -> bool:
     # Dokku apps typically have containers like "<app>.web.1"
     return name.endswith(".web.1") and not name.startswith("dokku.")
@@ -169,6 +200,7 @@ def collect():
             "mem_limit": s.get("mem_limit", ""),
             "mem_pct": s.get("mem_pct", ""),
             "restarts": docker_inspect_restart_count(name),
+            "logs": get_container_logs(name, lines=50),
         }
 
         if is_app_web_container(name):