reuses TRAEFIK_LISTENING_IP env variable

env_files/ssh-tunnel-example.env

@@ -1,4 +1,3 @@
-local_ip=192.168.2.109
 local_ip_on_remote=localhost
 local_port=5432
 local_port_on_remote=5432

start-ssh-tunnel.sh

@@ -13,10 +13,12 @@ fi
 
 # shellcheck source=./env_files/ssh-tunnel-example.env
 . "${1}"
+# shellcheck source=./.env-example
+. ./.env
 
 ssh \
   -v \
   -N \
   -L \
-  "${local_ip}:${local_port}:${local_ip_on_remote}:${local_port_on_remote}" \
+  "${TRAEFIK_LISTENING_IP}:${local_port}:${local_ip_on_remote}:${local_port_on_remote}" \
   "${remote_host}"