fix: correct default shell

daemon/entrypoint.sh

-#!/bin/bash
-set -euo pipefail
+#!/bin/sh
+set -eu
 
 rm /tmp/rtorrent.log
 touch /tmp/rtorrent.log

wireguard/Dockerfile

@@ -9,6 +9,8 @@ RUN rm /sbin/iptables /sbin/ip6tables
 RUN ln -s /sbin/ip6tables-nft /sbin/ip6tables
 RUN ln -s /sbin/iptables-nft /sbin/iptables
 
+ENV LOCAL_NETWORK=""
+
 COPY entrypoint.sh /entrypoint.sh
 VOLUME ["/wireguard.conf"]
 ENTRYPOINT ["/entrypoint.sh"]

wireguard/entrypoint.sh

-#!/bin/bash
-set -euo pipefail
+#!/bin/sh
+set -eu
 
 if [ -n "$LOCAL_NETWORK" ]; then
   gateway=$(ip route list match 0.0.0.0 | grep -v tun0 | cut -d ' ' -f 3)