set network driver to bridge

templates/docker-compose.yml.j2

@@ -64,10 +64,10 @@ services:
 {% endif %}
   website:
     image: tootsuite/mastodon:latest
-    env_file: 
+    env_file:
       - env.production
     command: bash -c "bundle exec rails s -p 3000"
-    restart: always    
+    restart: always
     depends_on:
       - postgresql
 #      - pgbouncer
@@ -86,9 +86,9 @@ services:
 
   shell:
     image: tootsuite/mastodon:latest
-    env_file: 
+    env_file:
       - env.production
-    command: /bin/bash 
+    command: /bin/bash
     restart: "no"
     networks:
       - internal_network
@@ -98,7 +98,7 @@ services:
 
   streaming:
     image: tootsuite/mastodon:latest
-    env_file: 
+    env_file:
       - env.production
     command: node ./streaming
     restart: always
@@ -118,7 +118,7 @@ services:
 
   sidekiq:
     image: tootsuite/mastodon:latest
-    env_file: 
+    env_file:
       - env.production
     command: bundle exec sidekiq
     restart: always
@@ -138,6 +138,7 @@ services:
 
 networks:
   external_network:
+    driver: bridge
   internal_network:
     internal: true
 
@@ -146,12 +147,12 @@ volumes:
     driver_opts:
       type: none
       device: {{ mastodon_composer_folder }}/database/postgresql
-      o: bind    
+      o: bind
   redis:
     driver_opts:
       type: none
       device: {{ mastodon_composer_folder }}/database/redis
-      o: bind    
+      o: bind
 {% if es_enabled %}  elasticsearch:
     driver_opts:
       type: none
@@ -161,4 +162,4 @@ volumes:
     driver_opts:
       type: none
       device: {{ mastodon_composer_folder }}/web/system
-      o: bind   
+      o: bind