chore(deploy): add production caddy setup

Dockerfile

@@ -8,14 +8,16 @@ WORKDIR /app
 
 RUN apt-get update \
     && apt-get install -y --no-install-recommends curl \
+    && groupadd --system app \
+    && useradd --system --gid app --home-dir /app app \
     && rm -rf /var/lib/apt/lists/*
 
 COPY pyproject.toml README.md ./
 COPY src ./src
 COPY proto ./proto
 
-RUN pip install --no-cache-dir ".[dev]" \
-    && python -m gapido_auth.tools.generate_proto
+RUN pip install --no-cache-dir "."
+
+USER app
 
 CMD ["python", "-m", "gapido_auth.transport.grpc.server"]
-