fix: add Dockerfile.dcos, fix .woodpecker.yml paths and remove || true

docker/Dockerfile.dcos

@@ -0,0 +1,16 @@
+FROM python:3.12-slim
+
+WORKDIR /app
+
+# Install system dependencies
+RUN apt-get update && apt-get install -y --no-install-recommends \
+    curl \
+    && rm -rf /var/lib/apt/lists/*
+
+# Copy project and install
+COPY . .
+RUN pip install --break-system-packages .
+
+# Entry point
+ENTRYPOINT ["dcos"]
+CMD ["--help"]