Improve source package slightly

This moves us one step closer to a normal source package.  The sources
are now unpacked and we run "make install".  We still don't build
since we don't have all the necessary tools.

Also, most importantly, the source tarball now includes our actual
sources in addition to the prebuilt binaries.

Makefile

@@ -5,20 +5,27 @@ clean:
 	rm -rf dist/
 	rm -rf _install
 
-install: all
-	mkdir -p /usr/share/cockpit/subscription-manager
-	cp -r dist/* /usr/share/cockpit/subscription-manager
+install: all install-only
+
+install-only:
+	mkdir -p $(DESTDIR)/usr/share/cockpit/subscription-manager
+	cp -r dist/* $(DESTDIR)/usr/share/cockpit/subscription-manager
+	mkdir -p $(DESTDIR)/usr/share/metainfo/
+	cp org.cockpit-project.subscription-manager.metainfo.xml $(DESTDIR)/usr/share/metainfo/
+
+EXTRA_DIST = \
+	README.md \
+	org.cockpit-project.subscription-manager.metainfo.xml \
+	package.json \
+        .eslintrc.json \
+	webpack.config.js \
+	webpack-with-stats \
+	Makefile
 
 # when building a distribution tarball, call webpack with a 'production' environment
 dist-gzip: NODE_ENV=production
 dist-gzip: clean all
-	mkdir -p _install/usr/share/cockpit
-	cp -r dist/ _install/usr/share/cockpit/subscription-manager
-	mkdir -p _install/usr/share/metainfo/
-	cp *.metainfo.xml _install/usr/share/metainfo/
-	cp subscription-manager-cockpit.spec _install/
-	tar -C _install/ -czf subscription-manager-cockpit.tar.gz .
-	rm -rf _install
+	tar czf subscription-manager-cockpit.tar.gz --transform 's,^,subscription-manager-cockpit/,' $$(cat webpack.inputs) $(EXTRA_DIST) dist/
 
 srpm: dist-gzip
 	rpmbuild -bs \