chore: Download dependencies to the /tmp dir before deleting

Containerfile

@@ -27,14 +27,14 @@ RUN git clone https://github.com/KyleGospo/xdg-utils-distrobox-arch.git --single
     rm -drf xdg-utils-distrobox-arch
 USER root
 WORKDIR /
-RUN git clone https://github.com/89luca89/distrobox.git --single-branch && \
-    cp distrobox/distrobox-host-exec /usr/bin/distrobox-host-exec && \
+RUN git clone https://github.com/89luca89/distrobox.git --single-branch /tmp/distrobox && \
+    cp /tmp/distrobox/distrobox-host-exec /usr/bin/distrobox-host-exec && \
     ln -s /usr/bin/distrobox-host-exec /usr/bin/flatpak && \
     ln -s /usr/bin/distrobox-host-exec /usr/bin/firefox && \
-    wget https://github.com/1player/host-spawn/releases/download/$(cat distrobox/distrobox-host-exec | grep host_spawn_version= | cut -d "\"" -f 2)/host-spawn-$(uname -m) -O distrobox/host-spawn && \
-    cp distrobox/host-spawn /usr/bin/host-spawn && \
+    wget https://github.com/1player/host-spawn/releases/download/$(cat /tmp/distrobox/distrobox-host-exec | grep host_spawn_version= | cut -d "\"" -f 2)/host-spawn-$(uname -m) -O /tmp/distrobox/host-spawn && \
+    cp /tmp/distrobox/host-spawn /usr/bin/host-spawn && \
     chmod +x /usr/bin/host-spawn && \
-    rm -drf distrobox
+    rm -drf /tmp/distrobox
 
 # Install packages Distrobox adds automatically, this speeds up first launch
 RUN pacman -S \