diff --git a/conf/install-conf.yml b/conf/install-conf.yml
index 8c030ab..fc3d830 100644
--- a/conf/install-conf.yml
+++ b/conf/install-conf.yml
@@ -1,7 +1,7 @@
 # Basic no-TLS config for the embedded gateway
 proxyconfig:
   binds:
-    - localhost:__PORT__
+    - 127.0.0.1:__PORT__
   reverseproxyurl: https://__DOMAIN__
   tlsconfig:
       selfsigned:
diff --git a/conf/nginx.conf b/conf/nginx.conf
index ed70286..1589b56 100644
--- a/conf/nginx.conf
+++ b/conf/nginx.conf
@@ -1,12 +1,12 @@
 location / {
-  proxy_pass https://localhost:__PORT__;
+  proxy_pass https://127.0.0.1:__PORT__;
 
   # Include SSOWAT user panel.
   include conf.d/yunohost_panel.conf.inc;
 }
 
 location /ws/ {
-    proxy_pass https://localhost:__PORT__;
+    proxy_pass https://127.0.0.1:__PORT__;
     proxy_http_version 1.1;
     proxy_set_header Upgrade $http_upgrade;
     proxy_set_header Connection "Upgrade";
diff --git a/conf/systemd.service b/conf/systemd.service
index 36716ab..f66a0da 100644
--- a/conf/systemd.service
+++ b/conf/systemd.service
@@ -12,7 +12,7 @@ WorkingDirectory=__INSTALL_DIR__/
 PermissionsStartOnly=true
 
 AmbientCapabilities=CAP_NET_BIND_SERVICE
-ExecStart=__INSTALL_DIR__/cells start
+ExecStart=__INSTALL_DIR__/cells start --grpc_discovery_port __PORT_DISCOVERY_GRPC__ --grpc_port __PORT_GRPC__
 Restart=on-failure
 StandardOutput=journal
 StandardError=inherit
@@ -24,8 +24,8 @@ SuccessExitStatus=0
 
 # Add environment variables
 Environment=CELLS_ENABLE_METRICS=false
-# Environment=CELLS_WORKING_DIR=__INSTALL_DIR__
-# Environment=CELLS_DATA_DIR=__DATA_DIR__
+Environment=CELLS_WORKING_DIR=__INSTALL_DIR__
+Environment=CELLS_DATA_DIR=__DATA_DIR__
 
 [Install]
 WantedBy=multi-user.target
diff --git a/manifest.toml b/manifest.toml
index 87e6daa..2ebbca4 100644
--- a/manifest.toml
+++ b/manifest.toml
@@ -71,6 +71,9 @@ ram.runtime = "50M"
     api.protected = true
 
     [resources.ports]
+    main.default = 8080
+    discovery_grpc.default = 50051
+    grpc.default = 50052
 
     [resources.apt]
     packages = "mariadb-server"