Integration of circleci in ruby on rails - ruby-on-rails-5

Question

Got struck on creating config file for circleci. This is my config file created under circleci folder(.circleci -> config.yml).
version: 2.0
jobs:
build:
working_directory: ~/electrik_backend
docker:
- image: circleci/ruby:2.4.1-node-browsers
- image: postgres:9.6.2-alpine
environment:
POSTGRES_USER: postgres
POSTGRES_DB: postgres_test
steps:
- checkout
# Bundle install dependencies
- run:
name: Install dependencies
command: bundle check --path=vendor/bundle || bundle install --path=vendor/bundle --jobs 4 --retry 3
# Restore bundle cache
- restore_cache:
keys:
- rails-demo-{{ checksum "Gemfile.lock" }}
- rails-demo-
# Store bundle cache
- save_cache:
key: rails-demo-{{ checksum "Gemfile.lock" }}
paths:
- vendor/bundle
- run:
name: install dockerize
command: wget https://github.com/jwilder/dockerize/releases/download/$DOCKERIZE_VERSION/dockerize-linux-amd64-$DOCKERIZE_VERSION.tar.gz && sudo tar -C /usr/local/bin -xzvf dockerize-linux-amd64-$DOCKERIZE_VERSION.tar.gz && rm dockerize-linux-amd64-$DOCKERIZE_VERSION.tar.gz
environment:
DOCKERIZE_VERSION: v0.3.0
- run:
name: Wait for db
command: dockerize -wait tcp://localhost:5432 -timeout 1m
# Setup the database
- run: bundle exec rake db:create db:migrate
- run: rails db:test:prepare
- run: rspec
Untill database everything is working, but at setup of database getting error as rake aborted!
Cannot loadRails.application.database_configuration:
Could not load database configuration. No such file - ["config/database.yml"]. my config.yml file is
development:
adapter: postgresql
encoding: unicode
database: electrik_development
host: localhost
pool: 5
username: postgres
password: test123
test:
adapter: postgresql
encoding: unicode
database: electrik_test
host: localhost
pool: 5
username: postgres
password: test123

Answer 1

Modify the database setup and run tests.
# Setup the database
- run: mv config/database.yml.sample config/database.yml
- run: RAILS_ENV=test bundle exec rake db:create
- run: bundle exec rake db:setup
# Run the tests
- type: shell
command: |
bundle exec rspec --profile 10 \
--out test_results/rspec.xml \
--format progress \
$(circleci tests glob "spec/**/*_spec.rb" | circleci tests split --split-by=timings)
I prefer to set host 127.0.0.1 for CircleCI