🐳 Update options and port for Dockerfile

.env

@@ -24,6 +24,12 @@
 # Defaults to true
 # REDIRECT_HTTPS=true
 
+# The path to the user data directory
+# USER_DATA_DIR=user-data
+
+# Override where the path to the configuration file is, can be a remote URL
+# VUE_APP_CONFIG_PATH=/conf.yml
+
 # Usually the same as BASE_URL, but accessible in frontend
 # VUE_APP_DOMAIN=https://dashy.to
 
@@ -46,4 +52,4 @@
 # VUE_APP_VERSION=2.0.0
 
 # Directory for conf.yml backups
-# BACKUP_DIR=./public/
+# BACKUP_DIR=./user-data/