fix: preserve dev fixes in v2 and add grid fuzzing

scripts/run.sh

@@ -21,20 +21,18 @@ fi
 export AUTH_SECRET=$(openssl rand -base64 32)
 
 # Start nginx proxy
-# 1. Replace the HOSTNAME in the nginx template file
-# 2. Create the nginx configuration file from the template
-# 3. Start the nginx server
+# 1. Create the nginx configuration file from the template
+# 2. Start the nginx server
 # Only listen on IPv6 when the host actually has IPv6 configured (#4596).
 # Otherwise nginx aborts with "socket() [::]:7575 failed (97: Address family
 # not supported by protocol)". Check HOMARR_DISABLE_IPV6 first so users can
 # force IPv4-only even when the host supports IPv6, then probe for IPv6
 # addresses via grep (not -s: proc files always report size 0).
-export HOSTNAME
 export NGINX_LISTEN_IPV6=''
 if [ "${HOMARR_DISABLE_IPV6:-false}" != "true" ] && grep -q . /proc/net/if_inet6 2>/dev/null; then
     NGINX_LISTEN_IPV6='listen [::]:7575;'
 fi
-envsubst '${HOSTNAME} ${NGINX_LISTEN_IPV6}' < /etc/nginx/templates/nginx.conf > /etc/nginx/nginx.conf
+envsubst '${NGINX_LISTEN_IPV6}' < /etc/nginx/templates/nginx.conf > /etc/nginx/nginx.conf
 # Start services in the background and store their PIDs
 nginx -g 'daemon off;' &
 NGINX_PID=$!
@@ -67,6 +65,9 @@ terminate() {
 
 trap terminate TERM INT
 
+# Next.js standalone uses HOSTNAME as its bind address. Docker's generated
+# hostname can be unresolvable, so bind explicitly while nginx uses loopback.
+export HOSTNAME=0.0.0.0
 node apps/nextjs/server.js &
 NEXTJS_PID=$!