Fix for rootless

Author: Sainan

docker/rootless/etc/templates/app.ini

@@ -23,7 +23,7 @@ SSH_PORT         = $SSH_PORT
 SSH_LISTEN_PORT  = $SSH_LISTEN_PORT
 BUILTIN_SSH_SERVER_USER = $RUN_USER
 LFS_START_SERVER = $LFS_START_SERVER
-ACME_DIRECTORY   = /data/gitea/acme
+ACME_DIRECTORY   = $GITEA_WORK_DIR/acme
 
 [database]
 PATH = $GITEA_WORK_DIR/data/gitea.db