mkosi: Clean up old packages from the build directory

mkosi.images/system/mkosi.conf.d/10-arch/mkosi.build.chroot

@@ -90,5 +90,10 @@ env --chdir="pkg/$ID" \
     PKGEXT=".pkg.tar" \
     MESON_EXTRA_CONFIGURE_OPTIONS="$MKOSI_MESON_OPTIONS $MESON_OPTIONS"
 
+(
+    shopt -s nullglob
+    rm -f "$BUILDDIR"/*.pkg.tar
+)
+
 cp "$OUTPUTDIR"/*.pkg.tar "$PACKAGEDIR"
 cp "$OUTPUTDIR"/*.pkg.tar "$BUILDDIR"

mkosi.images/system/mkosi.conf.d/10-centos-fedora/mkosi.build.chroot

@@ -113,5 +113,10 @@ CXX_LD="$( ((LLVM)) && echo lld)" \
     --noclean \
     "pkg/$ID/systemd.spec"
 
+(
+    shopt -s nullglob
+    rm -f "$BUILDDIR"/*.rpm
+)
+
 cp "$OUTPUTDIR"/*.rpm "$PACKAGEDIR"
 cp "$OUTPUTDIR"/*.rpm "$BUILDDIR"

mkosi.images/system/mkosi.conf.d/10-debian-ubuntu/mkosi.build.chroot

@@ -137,6 +137,8 @@ fi
 
 (
     shopt -s nullglob
+    rm -f "$BUILDDIR"/*.deb "$BUILDDIR"/*.ddeb
+
     cp ../*.deb ../*.ddeb "$PACKAGEDIR"
     cp ../*.deb ../*.ddeb "$OUTPUTDIR"
     cp ../*.deb ../*.ddeb "$BUILDDIR"

mkosi.images/system/mkosi.conf.d/10-opensuse/mkosi.build.chroot

@@ -132,5 +132,10 @@ if ! build; then
     build --noprep --nocheck
 fi
 
+(
+    shopt -s nullglob
+    rm -f "$BUILDDIR"/*.rpm
+)
+
 cp "$OUTPUTDIR"/*.rpm "$PACKAGEDIR"
 cp "$OUTPUTDIR"/*.rpm "$BUILDDIR"