initial - add implementation for simple crowdsec app to list and delete non-CAPI decisions

Dockerfile

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+# ---- Stage 1: Build dependencies ----
+FROM python:3.12-slim AS builder
+
+WORKDIR /app
+
+# Install build dependencies
+RUN apt-get update && apt-get install -y --no-install-recommends build-essential
+
+# Copy requirement files
+COPY requirements.txt .
+
+# Install to a local folder
+RUN pip install --prefix=/install -r requirements.txt
+
+# ---- Stage 2: Runtime ----
+FROM python:3.12-slim
+
+WORKDIR /app
+
+# Copy installed packages
+COPY --from=builder /install /usr/local
+
+# Copy app source
+COPY . .
+
+# Create non-root user
+RUN useradd -m fastapiuser && chown -R fastapiuser /app
+USER fastapiuser
+
+# Expose FastAPI port
+EXPOSE 8000
+
+# Start app with uvicorn
+CMD ["uvicorn", "app.main:app", "--host", "0.0.0.0", "--port", "8000"]