feat: add Docker healthcheck for container monitoring

Helps Watchtower and Docker detect unhealthy containers.

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

CHANGELOG.md

@@ -7,6 +7,17 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+## [0.2.3] - 2026-01-09
+
+### Added
+- Docker healthcheck for container health monitoring
+
+## [0.2.2] - 2026-01-09
+
+### Fixed
+- Config parsing for empty environment variables (allowed_paths, cors_*)
+- Use `env_parse_none_str=""` to treat empty strings as None
+
 ## [0.2.1] - 2026-01-09
 
 ### Fixed

Dockerfile

@@ -19,4 +19,7 @@ ENV PYTHONPATH=/app
 
 EXPOSE 8086
 
+HEALTHCHECK --interval=30s --timeout=10s --start-period=5s --retries=3 \
+  CMD curl -f http://localhost:8086/health || exit 1
+
 CMD ["uvicorn", "src.main:app", "--host", "0.0.0.0", "--port", "8086", "--workers", "1"]

pyproject.toml

@@ -1,6 +1,6 @@
 [project]
 name = "webber"
-version = "0.2.1"
+version = "0.2.3"
 description = "Mrs. Webber - Multi-Agent AI Development System"
 authors = [
     {name = "jpmschweitzer"}

src/shared/config.py

@@ -8,6 +8,7 @@ from pathlib import Path
 from functools import lru_cache
 from typing import Optional
 
+from pydantic import field_validator
 from pydantic_settings import BaseSettings, SettingsConfigDict
 
 
@@ -57,7 +58,7 @@ class Settings(BaseSettings):
     # Tool execution
     tool_timeout_seconds: int = 120
     sandbox_enabled: bool = True
-    allowed_paths: list[str] = []
+    allowed_paths: Optional[list[str]] = None
 
     # Sessions
     session_ttl_hours: int = 24
@@ -67,8 +68,14 @@ class Settings(BaseSettings):
         env_file=".env",
         case_sensitive=False,
         extra="ignore",
+        env_parse_none_str="",  # Treat empty string as None
     )
 
+    @property
+    def effective_allowed_paths(self) -> list[str]:
+        """Return allowed_paths or empty list if None."""
+        return self.allowed_paths or []
+
 
 @lru_cache()
 def get_settings() -> Settings: