Add project files: source code, Docker setup, docs and config templates

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

Dockerfile

@@ -0,0 +1,26 @@
+FROM python:3.11-slim
+
+RUN apt-get update && apt-get install -y \
+    nmap \
+    iputils-ping \
+    net-tools \
+    iproute2 \
+    libpcap-dev \
+    gcc \
+    && rm -rf /var/lib/apt/lists/*
+
+WORKDIR /app
+
+COPY requirements.txt .
+RUN pip install --no-cache-dir -r requirements.txt
+
+COPY src/ ./src/
+
+RUN mkdir -p /data
+
+ENV PYTHONUNBUFFERED=1
+ENV DB_PATH=/data/netmon.db
+
+EXPOSE 5000
+
+CMD ["python", "src/main.py"]