diff --git a/.env.example b/.env.example
index 2ad29defc..8fc027198 100644
--- a/.env.example
+++ b/.env.example
@@ -2,6 +2,8 @@
 # Copy this to `.env` and adapt to your needs.
 
 # Which docker-compose to load (ON PRODUCTION, USE ONLY docker-compose.yml !!)
+# If you need to connect to thumbor image service, simply use:
+# COMPOSE_FILE=docker-compose.yml:docker-compose.thumbor.yml
 COMPOSE_FILE=docker-compose.yml:docker-compose.dev.yml
 COMPOSE_PATH_SEPARATOR=:
 
@@ -93,6 +95,7 @@ LOCAL_TIME_ZONE_UTC=+1
 SITE_DOMAIN=None
 # Use thumbor service to resize images (used by Agenda module)
 USE_THUMBOR=false
-# Geocity network in order to communicate with other docker services on same host
-# This has to be unique for multiple instance on same docker host
-GEOCITY_NETWORK_NAME=geocity_network_dev
+# URL of the thumbor service to use
+# For dockerized thumbor service not exposed over the Internet, attache Geocity to its network with this override on top of this file:
+# COMPOSE_FILE=docker-compose.yml:docker-compose.thumbor.yml
+THUMBOR_SERVICE_URL="http://nginx-proxy"
diff --git a/docker-compose.thumbor.yml b/docker-compose.thumbor.yml
new file mode 100644
index 000000000..5bd58558e
--- /dev/null
+++ b/docker-compose.thumbor.yml
@@ -0,0 +1,13 @@
+# Simple override in order to setup network for using thumbor image service
+volumes:
+  static_root:
+
+services:
+  web: # Name of this container should not be changed
+    networks:
+      - thumbor_network
+networks:
+  # Use this network to communicate with thumbor image resize service
+  # More information here: https://gitlab.com/geocity/thumbor-service
+  thumbor_network:
+    external: true
diff --git a/docker-compose.yml b/docker-compose.yml
index 2c1a20580..58cd0bbc2 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -73,12 +73,13 @@ services:
       PAYMENT_CURRENCY:
       LOCAL_TIME_ZONE_UTC:
       SITE_DOMAIN:
+      USE_THUMBOR:
+      THUMBOR_SERVICE_URL:
     ports:
       - "${DJANGO_DOCKER_PORT}:9000"
     networks:
       - isolated
       - default
-      - geocity_network
 
   # Builder for the geocity_qgis image.
   qgis:
@@ -114,6 +115,3 @@ networks:
   # Use this for containers that should only be able to communicate with Django
   isolated:
     name: ${ISOLATED_NETWORK_NAME}
-  geocity_network:
-    name: ${GEOCITY_NETWORK_NAME}
-    driver: bridge
diff --git a/geocity/apps/api/views.py b/geocity/apps/api/views.py
index 159f4aaf4..bc7cd4a25 100644
--- a/geocity/apps/api/views.py
+++ b/geocity/apps/api/views.py
@@ -3,7 +3,6 @@
 import os
 
 import requests
-from constance import config
 from django.conf import settings
 from django.contrib.auth.models import AnonymousUser, User
 from django.db.models import F, Prefetch, Q
@@ -523,7 +522,7 @@ def image_thumbor_display(request, submission_id, image_name):
     if settings.USE_THUMBOR:
         try:
             response = requests.get(
-                f"{config.THUMBOR_SERVICE_URL}/{thumbor_params}/{image_url}"
+                f"{settings.THUMBOR_SERVICE_URL}/{thumbor_params}/{image_url}"
             )
         except requests.exceptions.RequestException as e:
             response = requests.get(image_url)
diff --git a/geocity/settings.py b/geocity/settings.py
index 28cd904d5..98037b77a 100644
--- a/geocity/settings.py
+++ b/geocity/settings.py
@@ -117,8 +117,9 @@
 # Allow REMOTE_USER Authentication
 ALLOW_REMOTE_USER_AUTH = os.getenv("ALLOW_REMOTE_USER_AUTH", "false").lower() == "true"
 
-# IBAN for UserProfile model
-USE_THUMBOR = os.getenv("USE_THUMBOR", "false").lower() == "true"
+# Thumbor image service
+USE_THUMBOR = os.getenv("USE_THUMBOR", "true").lower() == "true"
+THUMBOR_SERVICE_URL = os.getenv("THUMBOR_SERVICE_URL", "None")
 
 SITE_HTTPS = ENV == "PROD"
 
@@ -271,7 +272,6 @@
         "IP_WHITELIST",
         "NETWORK_WHITELIST",
         "LOGOUT_REDIRECT_HOSTNAME_WHITELIST",
-        "THUMBOR_SERVICE_URL",
     ),
 }
 
@@ -417,11 +417,6 @@
         "localhost,geocity.ch",
         "Domaines autorisés à la redirection après logout",
     ),
-    "THUMBOR_SERVICE_URL": (
-        "http://nginx-proxy",
-        "URL du service thumbor (https://github.com/thumbor/thumbor), recommandé pour l'optimisation des images du module Agenda",
-        str,
-    ),
 }
 
 TEMPLATES = [