add PKGBUILD, upd DEB builder

packaging/archlinux/Makefile

@@ -0,0 +1,22 @@
+DOCKER_CMD ?= docker
+DOCKER_IMG = computebuilder:archlinux
+BUILDDIR = build
+
+all: docker-build build
+
+clean:
+	test -d $(BUILDDIR) && rm -rf $(BUILDDIR) || true
+
+docker-build:
+	$(DOCKER_CMD) build -f Dockerfile -t $(DOCKER_IMG) .
+
+build: clean
+	mkdir -p $(BUILDDIR)
+	VERSION=$$(awk '/^version/{print $$3}' ../../pyproject.toml | sed s'/-/\./'); \
+		sed "s/pkgver=.*/pkgver=$$VERSION/" PKGBUILD > $(BUILDDIR)/PKGBUILD
+	cp -v ../../dist/compute-*[.tar.gz] $(BUILDDIR)/
+	cp ../../extra/completion.bash $(BUILDDIR)/
+	$(DOCKER_CMD) run --rm -i -v $$PWD/$(BUILDDIR):/mnt --ulimit "nofile=1024:1048576" \
+		$(DOCKER_IMG) makepkg --nodeps --clean
+	# Remove unwanted files from build dir
+	rm $(BUILDDIR)/compute*.tar.gz $(BUILDDIR)/PKGBUILD