diff --git a/setup/flavors/compose/docker-compose.yml b/setup/flavors/compose/docker-compose.yml
index fcf0c092..a82817af 100644
--- a/setup/flavors/compose/docker-compose.yml
+++ b/setup/flavors/compose/docker-compose.yml
@@ -2,7 +2,7 @@
 # This file is auto-generated by the Mailu configuration wizard.
 # Please read the documentation before attempting any change.
 
-version: '2'
+version: '3.7'
 
 services:
 
@@ -11,7 +11,7 @@ services:
     image: redis:alpine
     restart: always
     volumes:
-      - "$ROOT/redis:/data"
+      - "{{ root }}/redis:/data"
 
   # Core services
   front:
@@ -24,15 +24,15 @@ services:
     ports:
     {% for port in (80, 443, 25, 465, 587, 110, 995, 143, 993) %}
     {% if bind4 %}
-      - "$PUBLIC_IPV4:{{ port }}:{{ port }}"
+      - "{{ bind4}}:{{ port }}:{{ port }}"
     {% endif %}
     {% if bind6 %}
-      - "$PUBLIC_IPV6:{{ port }}:{{ port }}"
+      - "{{ bind6 }}:{{ port }}:{{ port }}"
     {% endif %}
     {% endfor %}
     {% if flavor in ('cert', 'mail') %}
     volumes:
-      - "$ROOT/certs:/certs"
+      - "{{ root }}/certs:/certs"
     {% endif %}
 
   admin:
@@ -44,8 +44,8 @@ services:
       - 127.0.0.1:8080:80
     {% endif %}
     volumes:
-      - "$ROOT/data:/data"
-      - "$ROOT/dkim:/dkim"
+      - "{{ root }}/data:/data"
+      - "{{ root }}/dkim:/dkim"
     depends_on:
       - redis
 
@@ -54,9 +54,9 @@ services:
     restart: always
     env_file: {{ env }}
     volumes:
-      - "$ROOT/data:/data"
-      - "$ROOT/mail:/mail"
-      - "$ROOT/overrides:/overrides"
+      - "{{ root }}/data:/data"
+      - "{{ root }}/mail:/mail"
+      - "{{ root }}/overrides:/overrides"
     depends_on:
       - front
 
@@ -65,8 +65,8 @@ services:
     restart: always
     env_file: {{ env }}
     volumes:
-      - "$ROOT/data:/data"
-      - "$ROOT/overrides:/overrides"
+      - "{{ root }}/data:/data"
+      - "{{ root }}/overrides:/overrides"
     depends_on:
       - front
 
@@ -77,9 +77,9 @@ services:
     restart: always
     env_file: {{ env }}
     volumes:
-      - "$ROOT/filter:/var/lib/rspamd"
-      - "$ROOT/dkim:/dkim"
-      - "$ROOT/overrides/rspamd:/etc/rspamd/override.d"
+      - "{{ root }}/filter:/var/lib/rspamd"
+      - "{{ root }}/dkim:/dkim"
+      - "{{ root }}/overrides/rspamd:/etc/rspamd/override.d"
     depends_on:
       - front
   {% endif %}
@@ -90,7 +90,7 @@ services:
     restart: always
     env_file: {{ env }}
     volumes:
-      - "$ROOT/filter:/data"
+      - "{{ root }}/filter:/data"
   {% endif %}
 
   {% if enable_webdav %}
@@ -99,7 +99,7 @@ services:
     restart: always
     env_file: {{ env }}
     volumes:
-      - "$ROOT/dav:/data"
+      - "{{ root }}/dav:/data"
   {% endif %}
 
   {% if enable_fetchmail %}
@@ -108,7 +108,7 @@ services:
     restart: always
     env_file: {{ env }}
     volumes:
-      - "$ROOT/data:/data"
+      - "{{ root }}/data:/data"
   {% endif %}
 
   # Webmail
@@ -118,7 +118,7 @@ services:
     restart: always
     env_file: {{ env }}
     volumes:
-      - "$ROOT/webmail:/data"
+      - "{{ root }}/webmail:/data"
     depends_on:
       - imap
   {% endif %}
diff --git a/setup/flavors/compose/mailu.env b/setup/flavors/compose/mailu.env
index 24d7b247..2de771f3 100644
--- a/setup/flavors/compose/mailu.env
+++ b/setup/flavors/compose/mailu.env
@@ -9,14 +9,16 @@
 ###################################
 
 # Set this to the path where Mailu data and configuration is stored
-ROOT=/mailu
+# This variable is now set directly in `docker-compose.yml by the setup utility
+# ROOT=/mailu
 
 # Set to a randomly generated 16 bytes string
 SECRET_KEY={{ secret(16) }}
 
 # Address where listening ports should bind
-{% if bind4 %}PUBLIC_IPV4={{ bind4 }}{% endif %}
-{% if bind6 %}PUBLIC_IPV6={{ bind6 }}{% endif %}
+# This variables are now set directly in `docker-compose.yml by the setup utility
+# PUBLIC_IPV4=127.0.0.1
+# PUBLIC_IPV6=::1
 
 # Mail address of the postmaster
 POSTMASTER={{ postmaster }}
@@ -75,16 +77,16 @@ DOMAIN_REGISTRATION=true
 ###################################
 
 # Path to the admin interface if enabled
-WEB_ADMIN=/admin
+WEB_ADMIN={{ admin_path }}
 
 # Path to the webmail if enabled
-WEB_WEBMAIL=/webmail
+WEB_WEBMAIL={{ webmail_path }}
 
 # Website name
-SITENAME=Mailu
+SITENAME={{ site_name }{
 
 # Linked Website URL
-WEBSITE=https://mailu.io
+WEBSITE={{ website }}
 
 {% if recaptcha_public_key and recaptcha_private_key %}
 # Registration reCaptcha settings (warning, this has some privacy impact)