diff --git a/examples/custom_config/Dockerfile b/examples/custom_config/Dockerfile
deleted file mode 100644
index 054a811..0000000
--- a/examples/custom_config/Dockerfile
+++ /dev/null
@@ -1,3 +0,0 @@
-FROM steveltn/https-portal
-
-ADD ./nginx-conf/ /var/lib/nginx-conf
diff --git a/examples/custom_config/docker-compose.yml b/examples/custom_config/docker-compose.yml
index 2c73777..e049d96 100644
--- a/examples/custom_config/docker-compose.yml
+++ b/examples/custom_config/docker-compose.yml
@@ -1,9 +1,17 @@
-https-portal:
-  build: ./
-  ports:
-    - 80:80
-    - 443:443
-  environment:
-    # Redirect my.example.com to https:://letsencrypt.org
-    # The upsteams will be available as <%= domain.upstream %> in Nginx config
-    DOMAINS: 'my.example.domain -> https://letsencrypt.org, another.example.domain -> https://another.upstream'
+version: '3'
+
+services:
+  https-portal:
+    image: steveltn/https-portal:1
+    ports:
+      - 80:80
+      - 443:443
+    environment:
+      # Redirect my.example.com to https:://letsencrypt.org
+      # The upsteams will be available as <%= domain.upstream %> in Nginx config
+      DOMAINS: 'example.com -> https://letsencrypt.org'
+      STAGE: local
+    volumes:
+      - ./nginx-conf/example.com.conf.erb:/var/lib/nginx-conf/example.com.conf.erb:ro
+      - ./nginx-conf/example.com.ssl.conf.erb:/var/lib/nginx-conf/example.com.ssl.conf.erb:ro
+
diff --git a/examples/custom_config/nginx-conf/my.example.com.conf.erb b/examples/custom_config/nginx-conf/example.com.conf.erb
similarity index 100%
rename from examples/custom_config/nginx-conf/my.example.com.conf.erb
rename to examples/custom_config/nginx-conf/example.com.conf.erb
diff --git a/examples/custom_config/nginx-conf/my.example.com.ssl.conf.erb b/examples/custom_config/nginx-conf/example.com.ssl.conf.erb
similarity index 100%
rename from examples/custom_config/nginx-conf/my.example.com.ssl.conf.erb
rename to examples/custom_config/nginx-conf/example.com.ssl.conf.erb
diff --git a/examples/minimal/docker-compose.yml b/examples/minimal/docker-compose.yml
index 0fa135a..14795dd 100644
--- a/examples/minimal/docker-compose.yml
+++ b/examples/minimal/docker-compose.yml
@@ -1,10 +1,11 @@
-https-portal:
-  image: steveltn/https-portal
-  # You can build from source code rather than use the prebuilt image from Docker Hub.
-  # build: ../..
-  ports:
-    - 80:80
-    - 443:443
-  environment:
-    DOMAINS: 'example.com'
-    PRODUCTION: 'true'
+version: '3'
+
+services:
+  https-portal:
+    image: steveltn/https-portal:1
+    ports:
+      - 80:80
+      - 443:443
+    environment:
+      DOMAINS: 'example.com'
+      STAGE: local
diff --git a/examples/wordpress/docker-compose.yml b/examples/wordpress/docker-compose.yml
index ad1f877..67d5274 100644
--- a/examples/wordpress/docker-compose.yml
+++ b/examples/wordpress/docker-compose.yml
@@ -1,29 +1,30 @@
-https-portal:
-  image: steveltn/https-portal
-  # You can build from source code rather than use the prebuilt image from Docker Hub.
-  # build: ../..
-  ports:
-    - 80:80
-    - 443:443
-  links:
-    - wordpress
-  # Restart https-portal on failure or after Docker host restart.
-  restart: always
-  environment:
-    # Forward wordpress.example.com to the WordPress container.
-    # You can set up multiple domains at once.
-    DOMAINS: 'wordpress.example.com -> http://wordpress'
+version: '3'
 
-    # Using staging server by default, for there is a rate limit on production.
-    # Uncomment to use Let's Encrypt production server.
-    # PRODUCTION: 'true'
+services:
+  https-portal:
+    image: steveltn/https-portal:1
+    ports:
+      - 80:80
+      - 443:443
+    links:
+      - wordpress
+    # Restart https-portal on failure or after Docker host restart.
+    restart: always
+    environment:
+      # Forward wordpress.example.com to the WordPress container.
+      # You can set up multiple domains at once.
+      DOMAINS: 'example.com -> http://wordpress'
+      STAGE: local
+      # Using staging server by default, for there is a rate limit on production.
+      # Uncomment to use Let's Encrypt production server.
+      # STAGE: production
 
-wordpress:
-  image: wordpress
-  links:
-    - db:mysql
+  wordpress:
+    image: wordpress
+    links:
+      - db:mysql
 
-db:
-  image: mariadb
-  environment:
-    MYSQL_ROOT_PASSWORD: '<a secure password>'
+  db:
+    image: mariadb
+    environment:
+      MYSQL_ROOT_PASSWORD: '<a secure password>'