Diff to make bundler 2 work on circleci.

bundler2.diff

diff --git a/.circleci/config.yml b/.circleci/config.yml
index 37e192c..d639500 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -15,6 +15,7 @@ jobs:
           ENABLE_REVIEW_APPS: true
           BASIC_AUTH_USER: user
           BASIC_AUTH_PASSWORD: password
+          BUNDLER_VERSION: 2.0.0
       - image: circleci/postgres:11-alpine # 11
         environment:
           POSTGRES_USER: db-user
@@ -24,8 +25,8 @@ jobs:
       - checkout # magic

       - run:
-          name: Which bundler?
-          command: bundle -v
+          name: install bundler
+          command: gem install bundler --version $BUNDLER_VERSION

       # Restore bundle cache
       - restore_cache:
@@ -48,7 +49,7 @@ jobs:

       - run:
           name: Database setup
-          command: bin/rails db:schema:load --trace
+          command: bundle exec bin/rails db:schema:load --trace

       # Create test results directory
       - run:
diff --git a/Gemfile.lock b/Gemfile.lock
index f9da86e..592b646 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -402,4 +402,4 @@ RUBY VERSION
    ruby 2.6.0p-1

 BUNDLED WITH
-   1.17.2
+   2.0.0

You need to use bundle exec for all commands,
otherwise it'll use the wrong version of bundler, and break.

should you update the gist?