refactor: Simplify Dockerfile requirements and enhance health check script with API key validation and connectivity checks

Dockerfile

@@ -13,7 +13,7 @@ RUN apt-get update && apt-get install -y \
 WORKDIR /app
 
 # Copy requirements files
-COPY requirements.txt requirements-dev.txt ./
+COPY requirements.txt ./
 
 # Create virtual environment and install dependencies
 RUN python -m venv /opt/venv