diff --git a/DEVELOPMENT.md b/DEVELOPMENT.md
index 8926c75..a15fa57 100644
--- a/DEVELOPMENT.md
+++ b/DEVELOPMENT.md
@@ -19,6 +19,7 @@ Just run and open http://localhost:4000/
 1. VS Code and RubyMine are great IDE's/editors.
 1. To run VS Code plugin Ruby Test Explorer in docker container you need to create path to custom 
 1. Do not commit too much without testing. Also keep commits small for documentation and reversability issues.
+1. You need to rebuild the docker image when you change gems.
 
 ## Best practices
 
@@ -39,6 +40,10 @@ FIXME, TODO, EXPLAIN, OBSOLETE
 
 ## Handy commands
 
+Build or rebuild
+    
+    docker-compose -f docker-compose.dev.yml build`
+
 To get inside docker web+test containers:
 
     docker-compose -f docker-compose.dev.yml exec -u root web /bin/bash`
diff --git a/config/environments/development.rb b/config/environments/development.rb
index 27551e3..43fd377 100644
--- a/config/environments/development.rb
+++ b/config/environments/development.rb
@@ -29,14 +29,14 @@ Ensl::Application.configure do
   config.assets.debug = true
 
   # Use a different cache store
-  config.cache_store = :dalli_store
+  config.cache_store = :dalli_store, 'memcached'
 
   # Enable threaded mode
   # config.threadsafe!
   config.eager_load = false
 
-  config.web_console.whitelisted_ips = '172.0.0.0/8'
-  config.web_console.whiny_requests = true
+  config&.web_console.whitelisted_ips = '172.0.0.0/8'
+  config&.web_console.whiny_requests = true
 
   config.serve_static_assets = true
 end
diff --git a/docker-compose.dev.yml b/docker-compose.dev.yml
index 46ad474..7ef8abd 100644
--- a/docker-compose.dev.yml
+++ b/docker-compose.dev.yml
@@ -6,7 +6,7 @@ services:
     tty: true
     stdin_open: true
     # Debug
-    # command: /bin/bash
+    #command: /bin/bash
     container_name: ensl_dev
     build:
       context: ./
@@ -41,7 +41,7 @@ services:
       - 3005:3005 # Capybara listens here
     links:
       - db
-      - selenium
+    #  - selenium
     volumes:
       - ".:/var/www"
     # command: bin/spring server
@@ -102,6 +102,7 @@ services:
 
   memcached:
     image: memcached:latest
+    container_name: ensl_dev_memcached
   
   #redis:
   #  image: redis