From cdbdbad9ae2f3f6d374563f72e5ec6476ca41a9b Mon Sep 17 00:00:00 2001
From: 300481 <300481@300481.de>
Date: Fri, 23 Apr 2021 22:27:48 +0200
Subject: [PATCH] use bash

---
 Dockerfile            | 1 +
 configure-firewall.sh | 2 +-
 2 files changed, 2 insertions(+), 1 deletion(-)

diff --git a/Dockerfile b/Dockerfile
index 9cbada5..71255b6 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,6 +1,7 @@
 FROM alpine:3.13.5
 
 RUN apk --no-cache add \
+    bash \
     tini \
     iptables
 
diff --git a/configure-firewall.sh b/configure-firewall.sh
index 581d36d..9ae3b55 100755
--- a/configure-firewall.sh
+++ b/configure-firewall.sh
@@ -1,4 +1,4 @@
-#!/bin/sh
+#!/bin/bash
 
 # https://github.com/vitobotta/docker-firewall
 # https://www.lammertbies.nl/comm/info/iptables.html