Use gitlab-build-images for precache some of the dependencies

.gitlab-ci.yml

-image: "ruby:2.1"
+image: registry.gitlab.com/gitlab-org/gitlab-build-images:ruby-2.1
 
 services:
   - mysql:latest
-  - redis:latest
+  - redis:alpine
 
 cache:
   key: "ruby21"
@@ -112,26 +112,16 @@ rspec 17 20: *knapsack
 rspec 18 20: *knapsack
 rspec 19 20: *knapsack
 
-spinach 0 20: *knapsack
-spinach 1 20: *knapsack
-spinach 2 20: *knapsack
-spinach 3 20: *knapsack
-spinach 4 20: *knapsack
-spinach 5 20: *knapsack
-spinach 6 20: *knapsack
-spinach 7 20: *knapsack
-spinach 8 20: *knapsack
-spinach 9 20: *knapsack
-spinach 10 20: *knapsack
-spinach 11 20: *knapsack
-spinach 12 20: *knapsack
-spinach 13 20: *knapsack
-spinach 14 20: *knapsack
-spinach 15 20: *knapsack
-spinach 16 20: *knapsack
-spinach 17 20: *knapsack
-spinach 18 20: *knapsack
-spinach 19 20: *knapsack
+spinach 0 10: *knapsack
+spinach 1 10: *knapsack
+spinach 2 10: *knapsack
+spinach 3 10: *knapsack
+spinach 4 10: *knapsack
+spinach 5 10: *knapsack
+spinach 6 10: *knapsack
+spinach 7 10: *knapsack
+spinach 8 10: *knapsack
+spinach 9 10: *knapsack
 
 teaspoon: *exec
 rubocop: *exec

scripts/prepare_build.sh

@@ -12,20 +12,6 @@ retry() {
 }
 
 if [ -f /.dockerenv ] || [ -f ./dockerinit ]; then
-    mkdir -p vendor
-
-    # Install phantomjs package
-    pushd vendor
-    if [ ! -e phantomjs_1.9.8-0jessie_amd64.deb ]; then
-        wget -q https://gitlab.com/axil/phantomjs-debian/raw/master/phantomjs_1.9.8-0jessie_amd64.deb
-    fi
-    dpkg -i phantomjs_1.9.8-0jessie_amd64.deb
-    popd
-
-    # Try to install packages
-    retry 'apt-get update -yqqq; apt-get -o dir::cache::archives="vendor/apt" install -y -qq --force-yes \
-      libicu-dev libkrb5-dev cmake nodejs postgresql-client mysql-client unzip'
-
     cp config/database.yml.mysql config/database.yml
     sed -i 's/username:.*/username: root/g' config/database.yml
     sed -i 's/password:.*/password:/g' config/database.yml