Bash completion for docker manifest rm

Signed-off-by: Jennings Zhang <jenni_zh@protonmail.com>

contrib/completion/bash/docker

@@ -4104,6 +4104,7 @@ _docker_manifest() {
 		create
 		inspect
 		push
+		rm
 	"
 	__docker_subcommands "$subcommands" && return
 
@@ -4202,6 +4203,13 @@ _docker_manifest_push() {
 	esac
 }
 
+_docker_manifest_rm() {
+	local counter=$( __docker_pos_first_nonflag )
+	if [ "$cword" -eq "$counter" ]; then
+		__docker_complete_images --force-tag --id
+	fi
+}
+
 _docker_node() {
 	local subcommands="
 		demote