feat: add skeptical-updater 0.0.1 placeholder (packaging only, bumped by CI to the first upstream tag)

README.md

@@ -1 +1,15 @@
+# skeptical-updater
 RPM spec file for `skeptical-updater` package
+
+## Build
+
+`Version` is a placeholder until CI bumps it to the first upstream tag: to build
+by hand, set it to an existing tag first. Needs `rpm-build` and `rpmdevtools`
+(`spectool`; it is `rpmdev-spectool` on openSUSE).
+
+```sh
+mkdir -p rpmbuild/SOURCES
+spectool -g -C rpmbuild/SOURCES skeptical-updater.spec
+rpmbuild -bb --define "_topdir $PWD/rpmbuild" skeptical-updater.spec
+# -> rpmbuild/RPMS/noarch/skeptical-updater-<version>-1*.noarch.rpm
+```