-if ( [ -f "${START_PACKAGES}" ] && [ -f "${END_PACKAGES}" ] )
-then
- diff "${START_PACKAGES}" "${END_PACKAGES}" > "${DIFF_PACKAGES}"
+if [ -f "${START_PACKAGES}" ] && [ -f "${END_PACKAGES}" ]; then
+ # ` || true` Ignore exit code because diff exits 1 when there is a diff
+ diff "${START_PACKAGES}" "${END_PACKAGES}" > "${DIFF_PACKAGES}" || true