Major Refactor: Refactor the codebase to improve readability and maintainability

Dockerfile

@@ -1,23 +1,34 @@
 FROM python:3.11-slim
 
+ENV PYTHONDONTWRITEBYTECODE=1 \
+    PYTHONUNBUFFERED=1
+
 WORKDIR /app
 
-# Install dependencies
+RUN apt-get update \
+ && apt-get install -y --no-install-recommends curl \
+ && rm -rf /var/lib/apt/lists/*
+
 COPY requirements.txt .
 RUN pip install --no-cache-dir -r requirements.txt
 
-# Copy source code
-COPY *.py .
-COPY templates/ ./templates/
-COPY static/ ./static/
-#COPY .env .
+COPY app.py database.py utils.py ./
+COPY routes/      ./routes/
+COPY models/      ./models/
+COPY services/    ./services/
+COPY templates/   ./templates/
+COPY static/      ./static/
+COPY db/          ./db/
 
-# Create the folder structure for the volume mounts
-RUN mkdir -p /app/static/cache
+RUN mkdir -p /app/static/cache /app/db
+
+RUN useradd --create-home --shell /bin/bash appuser \
+ && chown -R appuser:appuser /app
+USER appuser
 
 EXPOSE 5000
 
-# Run with unbuffered output so you can actually see the logs in Portainer
-ENV PYTHONUNBUFFERED=1
+HEALTHCHECK --interval=30s --timeout=5s --start-period=10s --retries=3 \
+    CMD curl -fsS http://localhost:5000/login >/dev/null || exit 1
 
-CMD ["python", "app.py"]
+CMD ["python", "app.py"]