Add Docker scripts and validation tests for Zen MCP Server

- Created build.sh script for building the Docker image with environment variable checks.
- Added deploy.sh script for deploying the Zen MCP Server with health checks and logging.
- Implemented healthcheck.py to verify server process, Python imports, log directory, and environment variables.
- Developed comprehensive tests for Docker configuration, environment validation, and integration with MCP.
- Included performance tests for Docker image size and startup time.
- Added validation script tests to ensure proper Docker and MCP setup.

Dockerfile

@@ -0,0 +1,84 @@
+# ===========================================
+# STAGE 1: Build dependencies
+# ===========================================
+FROM python:3.11-slim AS builder
+
+# Install system dependencies for building
+RUN apt-get update && apt-get install -y \
+    build-essential \
+    curl \
+    && rm -rf /var/lib/apt/lists/*
+
+# Set working directory
+WORKDIR /app
+
+# Copy requirements files
+COPY requirements.txt requirements-dev.txt ./
+
+# Create virtual environment and install dependencies
+RUN python -m venv /opt/venv
+ENV PATH="/opt/venv/bin:$PATH"
+
+# Install Python dependencies
+RUN pip install --no-cache-dir --upgrade pip setuptools wheel && \
+    pip install --no-cache-dir -r requirements.txt
+
+# ===========================================
+# STAGE 2: Runtime image
+# ===========================================
+FROM python:3.11-slim AS runtime
+
+# Add metadata labels for traceability
+LABEL maintainer="Zen MCP Server Team"
+LABEL version="1.0.0"
+LABEL description="Zen MCP Server - AI-powered Model Context Protocol server"
+LABEL org.opencontainers.image.title="zen-mcp-server"
+LABEL org.opencontainers.image.description="AI-powered Model Context Protocol server with multi-provider support"
+LABEL org.opencontainers.image.version="1.0.0"
+LABEL org.opencontainers.image.source="https://github.com/BeehiveInnovations/zen-mcp-server"
+LABEL org.opencontainers.image.documentation="https://github.com/BeehiveInnovations/zen-mcp-server/blob/main/README.md"
+LABEL org.opencontainers.image.licenses="Apache 2.0 License"
+
+# Create non-root user for security
+RUN groupadd -r zenuser && useradd -r -g zenuser zenuser
+
+# Install minimal runtime dependencies
+RUN apt-get update && apt-get install -y \
+    ca-certificates \
+    procps \
+    && rm -rf /var/lib/apt/lists/* \
+    && apt-get clean
+
+# Copy virtual environment from builder
+COPY --from=builder /opt/venv /opt/venv
+ENV PATH="/opt/venv/bin:$PATH"
+
+# Set working directory
+WORKDIR /app
+
+# Copy application code
+COPY --chown=zenuser:zenuser . .
+
+# Create logs directory with proper permissions
+RUN mkdir -p logs && chown -R zenuser:zenuser logs
+
+# Create tmp directory for container operations
+RUN mkdir -p tmp && chown -R zenuser:zenuser tmp
+
+# Copy health check script
+COPY --chown=zenuser:zenuser docker/scripts/healthcheck.py /usr/local/bin/healthcheck.py
+RUN chmod +x /usr/local/bin/healthcheck.py
+
+# Switch to non-root user
+USER zenuser
+
+# Health check configuration
+HEALTHCHECK --interval=30s --timeout=10s --start-period=5s --retries=3 \
+    CMD python /usr/local/bin/healthcheck.py
+
+# Set environment variables
+ENV PYTHONUNBUFFERED=1
+ENV PYTHONPATH=/app
+
+# Default command
+CMD ["python", "server.py"]