Add context init command to set up remote swarm

abra

@@ -375,11 +375,19 @@ sub_context_help() {
 	echo "Usage: $PROGRAM_NAME [global opts] context <subcommand> [sub opts]"
 	echo ""
 	echo "Subcommands:"
-	echo "    init HOST [USER] [PORT]               set up remote Docker context"
-	echo "    use                                   activate remote Docker context"
+	echo "    create HOST [USER] [PORT]             set up remote Docker context"
+	echo "    use HOST                              activate remote Docker context"
+	echo "    init HOST                             activate swarm mode"
 }
 
 sub_context_init() {
+	load_context
+
+	docker swarm init || true
+	docker network create --driver=overlay proxy --scope swarm || true
+}
+
+sub_context_create() {
 	HOST="$1"
 	USERNAME="$2"
 	PORT="$3"