update installation instructions

Author: furlongm

BUILD.md

@@ -5,21 +5,24 @@ vim VERSION.txt  # modify version
 git add VERSION.txt
 version=$(<VERSION.txt)
 git commit -m "Release v${version}"
-git tag v${version}
 ```
 
 # Build DEB package
 
 ```shell
 sudo apt -y install python3-setuptools debhelper dh-exec dh-python git-buildpackage
-gbp dch --commit
-gbp buildpackage -uc -us
+version=$(<VERSION.txt)
+gbp dch --commit --new-version=${version}-1 --release --distribution=stable
+git tag v${version}
+gbp buildpackage -uc -us --git-upstream-tree=main
 ```
 
 # Build RPM packages
 
 ```shell
 sudo dnf -y install rpm-build git python3-setuptools
+version=$(<VERSION.txt)
+git tag v${version}
 python3 setup.py bdist_rpm --python=/usr/bin/python3
 rpmbuild -bb patchman-client.spec
 ```