Introduce cleanup-after-build.sh to clean all docker volumes generate…

…d during rpm building

hack/cleanup-after-build.sh

@@ -0,0 +1,8 @@
+#!/bin/bash
+
+# This script cleans up resources allocated during image building
+
+source "$(dirname "${BASH_SOURCE}")/lib/init.sh"
+
+# delete all docker volumes used to build images to free space
+os::cleanup::buildvolumes

hack/lib/util/environment.sh

@@ -287,3 +287,45 @@ function os::util::environment::setup_images_vars() {
 	export MAX_IMAGES_BULK_IMPORTED_PER_REPOSITORY="${MAX_IMAGES_BULK_IMPORTED_PER_REPOSITORY:-3}"
 }
 readonly -f os::util::environment::setup_images_vars
+
+# os::cleanup::docker::volumes clens all docker volumes with a given prefix.
+#
+# Globals:
+#  None
+# Arguments:
+#  - 1: docker volume prefix
+# Returns:
+#  None
+function os::cleanup::docker::volumes() {
+	local prefix=${1}
+	local volumes="$(docker volume ls -q | grep ${prefix})"
+	if [[ "${volumes}" != "" ]]; then
+		docker volume rm ${volumes}
+	fi
+}
+readonly -f os::cleanup::docker::volumes
+
+# os::cleanup::buildvolumes clens all volumes with origin-build prefix
+#
+# Globals:
+#  None
+# Arguments:
+#  None
+# Returns:
+#  None
+function os::cleanup::buildvolumes() {
+	local result=1
+	if os::util::find::system_binary 'imagebuilder' >/dev/null; then
+		os::log::warning "volumes cleaning not implemented for imagebuilder"
+		result=0
+	else
+		os::log::warning "Unable to locate 'imagebuilder' on PATH, falling back to Docker"
+		if os::cleanup::docker::volumes "origin-build"; then
+			result=0
+		fi
+	fi
+
+	return "${result}"
+}
+
+readonly -f os::cleanup::buildvolumes