Create Dockerfile

Dockerfile

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+# ============================================
+# RetroIPTVGuide - Dockerfile
+# ============================================
+FROM python:3.12-slim
+
+LABEL maintainer="thehack904"
+LABEL description="RetroIPTVGuide Flask + SQLite Web App"
+LABEL version="3.1.0"
+
+# --------------------------------------------
+# Environment setup
+# --------------------------------------------
+ENV PYTHONUNBUFFERED=1 \
+    PIP_NO_CACHE_DIR=1 \
+    APP_HOME=/app
+
+WORKDIR $APP_HOME
+
+# --------------------------------------------
+# Install minimal system dependencies
+# --------------------------------------------
+RUN apt-get update && apt-get install -y --no-install-recommends \
+        tini \
+        curl \
+    && rm -rf /var/lib/apt/lists/*
+
+# --------------------------------------------
+# Copy and install Python dependencies
+# --------------------------------------------
+COPY requirements.txt ./
+RUN pip install --upgrade pip && pip install -r requirements.txt
+
+# --------------------------------------------
+# Copy application code
+# --------------------------------------------
+COPY . .
+
+# --------------------------------------------
+# Create persistent directories for TrueNAS mounts
+# --------------------------------------------
+RUN mkdir -p /app/config /app/logs /app/data
+
+# --------------------------------------------
+# Expose Flask port
+# --------------------------------------------
+EXPOSE 5000
+
+# --------------------------------------------
+# Use tini as init for graceful shutdown handling
+# --------------------------------------------
+ENTRYPOINT ["/usr/bin/tini", "--"]
+
+# --------------------------------------------
+# Start the Flask app
+# (Change app.py to wsgi.py if you ever switch to gunicorn)
+# --------------------------------------------
+CMD ["python", "app.py"]