fix: do not ask questions for apt-get upgrade

Author: nijel

base/Dockerfile

@@ -51,7 +51,7 @@ ENV PATH=/app/venv/bin:/opt/tools/bin:/usr/local/bin:/usr/bin:/bin
 RUN \
   export DEBIAN_FRONTEND=noninteractive \
   && apt-get update \
-  && apt-get upgrade \
+  && apt-get upgrade -y \
   && apt-get install --no-install-recommends -y \
     nginx-light \
     ruby-licensee \