docker: pre-download hub items (debian image) (#2934)

Author: mmetc

Dockerfile.debian

@@ -30,6 +30,7 @@ RUN make clean release DOCKER_BUILD=1 BUILD_STATIC=1 && \
     ./wizard.sh --docker-mode && \
     cd - >/dev/null && \
     cscli hub update && \
+    ./docker/preload-hub-items && \
     cscli collections install crowdsecurity/linux && \
     cscli parsers install crowdsecurity/whitelists