From b326528269eb1cf9aae218af328760f3d40e0893 Mon Sep 17 00:00:00 2001
From: Antony Messerli <antony@mes.ser.li>
Date: Mon, 30 Dec 2024 12:49:45 -0600
Subject: [PATCH] Limit envsub to only variable being changed

---
 root/init.sh | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/root/init.sh b/root/init.sh
index addff58..abad4a1 100755
--- a/root/init.sh
+++ b/root/init.sh
@@ -13,8 +13,8 @@ mkdir -p \
 # copy config files
 [[ ! -f /config/nginx/nginx.conf ]] &&
   cp /defaults/nginx.conf /config/nginx/nginx.conf
-[[ ! -f /config/nginx/site-confs/default ]] &&
-  envsubst </defaults/default >/config/nginx/site-confs/default
+[[ ! -f /config/nginx/site-confs/default ]] && \
+  envsubst '${NGINX_PORT}' < /defaults/default > /config/nginx/site-confs/default
 
 # create dnsmasq config, and conditionally add DHCP proxy support
 if [[ ! -f /config/dnsmasq/dnsmasq.conf ]]; then
@@ -28,7 +28,7 @@ if [[ ! -f /config/dnsmasq/dnsmasq.conf ]]; then
       CONTAINER_IP=$(hostname -i)
       export CONTAINER_IP
     fi
-    envsubst </defaults/dnsmasq-dhcpproxy.conf >>/config/dnsmasq/dnsmasq.conf
+    envsubst '${DHCP_RANGE_START} ${CONTAINER_IP}' </defaults/dnsmasq-dhcpproxy.conf >>/config/dnsmasq/dnsmasq.conf
   fi
 fi