Use help2man to generate each manpages for commands

1. Add help2man as Build dependency via debian/control
2. Run it on build time via debian/rules
3. Install it via debian/manpages
4. Add clean target via debian/clean

debian/clean

@@ -0,0 +1 @@
+debian/*.1

debian/control

@@ -3,7 +3,7 @@ Maintainer: Zachary Mark <zachary-mark@github.com>
 Section: misc
 Priority: optional
 Standards-Version: 4.5.1
-Build-Depends: debhelper (>= 10), git, moreutils, jq, rsync (>= 2.6.4)
+Build-Depends: debhelper (>= 10), git, moreutils, jq, rsync (>= 2.6.4), help2man,
 Homepage: https://github.com/github/backup-utils
 Vcs-Git: https://github.com/github/backup-utils.git
 Vcs-Browser: https://github.com/github/backup-utils

debian/manpages

@@ -0,0 +1 @@
+debian/*.1

debian/rules

@@ -1,6 +1,18 @@
 #!/usr/bin/make -f
 
+VERSION=$$(cat $(CURDIR)/share/github-backup-utils/version)
+
 override_dh_auto_build:
+	# generate manpages for ghe-backup, ghe-host-check and ghe-restore
+	help2man $(CURDIR)/bin/ghe-backup -N -o $(CURDIR)/debian/ghe-backup.1 \
+          -n "Take snapshots of all GitHub Enterprise data" \
+          --version-string="ghe-backup $(VERSION)"
+	help2man $(CURDIR)/bin/ghe-host-check -N -o $(CURDIR)/debian/ghe-host-check.1 \
+          -n "Restores a GitHub instance from local backup snapshots" \
+          --version-string="ghe-host-check $(VERSION)"
+	help2man $(CURDIR)/bin/ghe-restore -N -o $(CURDIR)/debian/ghe-restore.1 \
+          -n "Verify connectivity with the GitHub Enterprise Server host" \
+          --version-string="ghe-restore $(VERSION)"
 
 %:
 	dh $@