make sure machine dependent files don't end up in the factory

mkosi.finalize.d/99-etc.sh.chroot

@@ -25,3 +25,26 @@ rm --recursive --force /usr/share/factory/etc/pam.d
 # Copy all of etc into factory dir for tmpfiles.d (see tmpfiles.d docs).
 [ -d /usr/share/factory ] || mkdir /usr/share/factory
 cp --archive --no-target-directory --update=all /etc /usr/share/factory/etc
+
+# Clean up factory content that we absolutely do not want because it is machine/installation dependent.
+cd /usr/share/factory/etc
+rm --force \
+    .pwd.lock \
+    passwd \
+    passwd- \
+    shadow \
+    shadow- \
+    gshadow \
+    gshadow- \
+    group \
+    group- \
+    localtime \
+    machine-id \
+    subuid \
+    subgid- \
+    subgid \
+    subgid- \
+    crypttab \
+    vconsole.conf \
+    hostname \
+    locale.conf