fix: Update Dockerfile

Dockerfile

@@ -1,17 +1,63 @@
-FROM --platform=$BUILDPLATFORM python:3.10-alpine AS builder
+# syntax=docker/dockerfile:1
+
+### Build stage ###
+FROM python:3.13-alpine AS build
+
+# Install build dependencies for Pillow and other native wheels
+RUN apk add --no-cache \
+    build-base \
+    jpeg-dev zlib-dev freetype-dev
+
+# Copy uv (fast Python package manager)
+COPY --from=ghcr.io/astral-sh/uv:0.8.21 /uv /uvx /bin/
 
 WORKDIR /app
+COPY pyproject.toml uv.lock ./
 
-COPY requirements.txt /app
-RUN --mount=type=cache,target=/root/.cache/pip \
-    python3 -m pip install -r requirements.txt
+# Install dependencies into a virtual environment
+RUN --mount=type=cache,target=/root/.cache/uv \
+    uv sync --locked
 
-COPY . /app
+# Copy only app source files
+COPY blueprints blueprints
+COPY main.py server.py curl.py tools.py mail.py cache_helper.py ./
+COPY templates templates
+COPY data data
+COPY pwa pwa
+COPY .well-known .well-known
 
-# Optionally mount /data to store the data
-# VOLUME /data
+# Clean up caches and pycache
+RUN rm -rf /root/.cache/uv
+RUN find . -type d -name "__pycache__" -exec rm -rf {} +
 
-ENTRYPOINT ["python3"]
-CMD ["main.py"]
 
-FROM builder as dev-envs
+### Runtime stage ###
+FROM python:3.13-alpine AS runtime
+ENV PATH="/app/.venv/bin:$PATH"
+
+# Create non-root user
+RUN addgroup -g 1001 appgroup && \
+    adduser -D -u 1001 -G appgroup -h /app appuser
+
+WORKDIR /app
+RUN apk add --no-cache curl
+
+
+# Copy only whats needed for runtime
+COPY --from=build --chown=appuser:appgroup /app/.venv /app/.venv
+COPY --from=build --chown=appuser:appgroup /app/blueprints /app/blueprints
+COPY --from=build --chown=appuser:appgroup /app/templates /app/templates
+COPY --from=build --chown=appuser:appgroup /app/data /app/data
+COPY --from=build --chown=appuser:appgroup /app/pwa /app/pwa
+COPY --from=build --chown=appuser:appgroup /app/.well-known /app/.well-known
+COPY --from=build --chown=appuser:appgroup /app/main.py /app/
+COPY --from=build --chown=appuser:appgroup /app/server.py /app/
+COPY --from=build --chown=appuser:appgroup /app/curl.py /app/
+COPY --from=build --chown=appuser:appgroup /app/tools.py /app/
+COPY --from=build --chown=appuser:appgroup /app/mail.py /app/
+COPY --from=build --chown=appuser:appgroup /app/cache_helper.py /app/
+
+USER appuser
+EXPOSE 5000
+
+ENTRYPOINT ["python3", "main.py"]