Add Debian package build

README.md

@@ -131,6 +131,23 @@ The resulting executable is:
 build/kindle2notes
 ```
 
+### Debian package
+
+On Debian or a Debian-based distribution, install the package build tools and
+build the binary package with:
+
+```bash
+sudo apt install build-essential cmake dpkg-dev
+dpkg-buildpackage --build=binary --no-sign
+```
+
+The `.deb`, `.changes`, and `.buildinfo` files are written to the parent
+directory. To create a Debian source package instead, run:
+
+```bash
+dpkg-buildpackage --build=source --no-sign
+```
+
 When the source is built from Git, CMake obtains the version from
 `git describe`. A build made exactly from a release tag reports only that tag
 (for example, `1.0`). Later commits include their distance from the tag and