Docker: moves ssh config for capistrano to its own docker-compose file

docker-compose.deploy.yml

@@ -0,0 +1,9 @@
+version: '3'
+services:
+  app:
+    volumes:
+      # For deploy with capistrano, pass the .ssh/config and ssh-agent
+      - ~/.ssh:/root/.ssh
+      - $SSH_AUTH_SOCK:/ssh-agent
+    environment:
+      - SSH_AUTH_SOCK=/ssh-agent

docker-compose.yml

@@ -6,15 +6,11 @@ services:
       - .:/app
       - bundle:/usr/local/bundle
       - node_modules:/app/node_modules
-      # For deploy with capistrano, pass the .ssh/config and ssh-agent
-      - ~/.ssh:/root/.ssh
-      - $SSH_AUTH_SOCK:/ssh-agent
     environment:
       - PORT=3000
       - DATABASE_HOST=pg
       - DATABASE_USERNAME=postgres
       - RAILS_ENV=development
-      - SSH_AUTH_SOCK=/ssh-agent
     ports:
       - 3000:3000
     links: