fix: update Containerfile.toolbox (ublue-os#213)

Co-authored-by: Primož Ajdišek <[email protected]>

Containerfile.toolbox

@@ -8,17 +8,14 @@ LABEL com.github.containers.toolbox="true" \
 
 COPY toolbox-packages /toolbox-packages
 
-RUN sed -Ei '/apt-get (update|upgrade)/s/^/#/' /usr/local/sbin/unminimize && \
-    apt-get update && \
-    yes | /usr/local/sbin/unminimize && \
+RUN apt-get update &&  apt-get upgrade -y \
     DEBIAN_FRONTEND=noninteractive apt-get -y install \
         $(cat toolbox-packages | xargs) && \
     rm -rd /var/lib/apt/lists/*
 
 RUN rm /toolbox-packages
 
-RUN   ln -fs /bin/sh /usr/bin/sh && \
-      ln -fs /usr/bin/distrobox-host-exec /usr/local/bin/docker && \
+RUN   ln -fs /usr/bin/distrobox-host-exec /usr/local/bin/docker && \
       ln -fs /usr/bin/distrobox-host-exec /usr/local/bin/flatpak && \ 
       ln -fs /usr/bin/distrobox-host-exec /usr/local/bin/podman && \
       ln -fs /usr/bin/distrobox-host-exec /usr/local/bin/rpm-ostree