chore: move env variable to dockerfile

.env

@@ -1,5 +1,4 @@
 _APP_ENV=development
-_APP_HOME=https://appwrite.io
 _APP_LOCALE=en
 _APP_WORKER_PER_CORE=6
 _APP_CONSOLE_WHITELIST_ROOT=disabled

Dockerfile

@@ -37,7 +37,8 @@ ARG VERSION=dev
 ARG DEBUG=false
 ENV DEBUG=$DEBUG
 
-ENV _APP_VERSION=$VERSION
+ENV _APP_VERSION=$VERSION \
+    _APP_HOME=https://appwrite.io
 
 RUN \
   if [ "$DEBUG" == "true" ]; then \