diff --git a/.example.env b/.example.env
new file mode 100644
index 0000000..18f815d
--- /dev/null
+++ b/.example.env
@@ -0,0 +1 @@
+DOMAIN=localhost
diff --git a/docker-compose.yaml b/docker-compose.yaml
index f759084..be077fd 100644
--- a/docker-compose.yaml
+++ b/docker-compose.yaml
@@ -18,6 +18,8 @@ services:
   proxy:
     build:
       context: ./services/nginx
+      args:
+        DOMAIN: ${DOMAIN:?DOMAIN not set}
     networks:
       - nextcloud-frontend
       - gitea-frontend
diff --git a/readme.md b/readme.md
index 2d2fd77..754abd9 100644
--- a/readme.md
+++ b/readme.md
@@ -21,11 +21,9 @@ Alternatively to generate a CA signed certificate (if your own a domain):
 ./tools/generate_cert.bash yourdomain.com admin@email.com .
 ```
 
-2. Configure the host name (e.g. for `localhost`):
+2. Make a `.env` configuration file
 
-```
-./tools/configure.bash localhost .
-```
+See `.example.env`.
 
 3. Start the services.
 
diff --git a/services/nginx/Dockerfile b/services/nginx/Dockerfile
index 28bc0d7..6b92c6f 100644
--- a/services/nginx/Dockerfile
+++ b/services/nginx/Dockerfile
@@ -1,5 +1,7 @@
 FROM nginx:1.28-alpine
 
-COPY ./default.conf /etc/nginx/conf.d/default.conf
+ARG DOMAIN
+COPY ./default.template.conf /tmp/default.template.conf
+RUN envsubst '$DOMAIN' < /tmp/default.template.conf > /etc/nginx/conf.d/default.conf
 COPY ./server.key /etc/ssl/crt/server.key
 COPY ./server.crt /etc/ssl/crt/server.crt
diff --git a/services/nginx/default.conf b/services/nginx/default.template.conf
similarity index 97%
rename from services/nginx/default.conf
rename to services/nginx/default.template.conf
index d958b0f..8ca14d7 100644
--- a/services/nginx/default.conf
+++ b/services/nginx/default.template.conf
@@ -13,14 +13,17 @@ upstream php-handler {
 server {
     listen 80;
 
-    server_name _;
+    server_name ${DOMAIN} www.${DOMAIN}
+                nextcloud.${DOMAIN}
+                gitea.${DOMAIN}
+                redmine.${DOMAIN};
 
     return 301 https://$host$request_uri;
 }
 
 server {
     listen 443 ssl;
-    server_name gitea.yourdomain.com;
+    server_name gitea.${DOMAIN};
 
     ssl_certificate     /etc/ssl/crt/server.crt;
     ssl_certificate_key /etc/ssl/crt/server.key;
@@ -40,7 +43,7 @@ server {
 
 server {
     listen 443 ssl;
-    server_name redmine.yourdomain.com;
+    server_name redmine.${DOMAIN};
 
     ssl_certificate     /etc/ssl/crt/server.crt;
     ssl_certificate_key /etc/ssl/crt/server.key;
@@ -53,7 +56,7 @@ server {
 # https://github.com/nextcloud/docker/blob/master/.examples/docker-compose/with-nginx-proxy/mariadb/fpm/web/nginx.conf
 server {
     listen 443 ssl;
-    server_name nextcloud.yourdomain.com;
+    server_name nextcloud.${DOMAIN};
 
     ssl_certificate     /etc/ssl/crt/server.crt;
     ssl_certificate_key /etc/ssl/crt/server.key;
diff --git a/tools/configure.bash b/tools/configure.bash
deleted file mode 100755
index 3f7b700..0000000
--- a/tools/configure.bash
+++ /dev/null
@@ -1,22 +0,0 @@
-#!/usr/bin/env bash
-set -eu
-
-usage="Usage: $0 server_name project_root"
-server_name="${1:?$usage}"
-root="${2:?$usage}"
-
-# Configure hostname for Nginx
-sed -Ei "s/(^[[:blank:]]*server_name [^_][^.]*\.)[^;]*/\1${server_name}/" "$root"/services/nginx/default.conf
-
-# Configure hostname for Gitea
-# Note that this works only if you use a docker volume named `tvcloud_gitea` (this project default).
-gitea_conf_file=/var/lib/docker/volumes/tvcloud_gitea/_data/gitea/conf/app.init
-if [[ ! -e $gitea_conf_file ]]; then
-  sudo mkdir -p "$(dirname "$gitea_conf_file")"
-  sudo touch "$gitea_conf_file"
-fi
-if sudo grep -Eq "\[server\] ROOT_URL = https://gitea\." $gitea_conf_file; then
-  sudo sed -Ei "s/(\[server\] ROOT_URL = https:\/\/gitea\.).*/\1$server_name/" "$gitea_conf_file"
-else
-  echo "[server] ROOT_URL = https://gitea.${server_name}/" | sudo tee -a "$gitea_conf_file" >/dev/null
-fi