enable CI checks

.github/CODEOWNERS

@@ -0,0 +1 @@
+* @adjust/dashboard_backend

.github/pull_request_template.md

@@ -0,0 +1,14 @@
+## Jira Ticket
+
+Does the description include a link to the Jira Ticket?
+- [ ] Yes
+- [ ] No
+
+Describe your pull-request about?
+- [ ] Major [Make sure to add `#major` in the PR title]
+- [ ] Minor [Make sure to add `#minor` in the PR title]
+- [ ] Patch [It's default, if no `#major` and `#minor` found in PR title]
+
+## Description
+
+_Put your description(Jira ticket, detailed info, etc.) here_

.github/renovate.json5

@@ -0,0 +1,4 @@
+{
+    "$schema": "https://docs.renovatebot.com/renovate-schema.json",
+    "extends": ["local>adjust/renovate-config:dashboard.json5"]
+}

.github/workflows/CI.yml

@@ -0,0 +1,22 @@
+name: Continuous Integration
+
+on:
+  workflow_dispatch:
+  push:
+    branches:
+      - 'enable_CI'
+  pull_request:
+    branches:
+      - 'master'
+
+jobs:
+  continuous-integration:
+    uses: adjust/githubWorkflows/.github/workflows/[email protected]
+    with:
+      bundler_version: '2.1.4'
+      team_id: 'T026H0087'
+    secrets:
+      AUTOMATE_PIP_SSH_KEY: ${{ secrets.AUTOMATE_PIP_SSH_KEY }}
+      GITHUB_CHECKOUT_TOKEN: ${{ secrets.DASHBOARD_TEAM_GITHUB_TOKEN }}
+      SLACK_WEBHOOK_URL: ${{ secrets.DASHBOARD_SLACK_WEBHOOK }}
+

.github/workflows/stale.yml

@@ -0,0 +1,20 @@
+name: Mark and delete stale issues and pull requests
+
+on:
+  schedule:
+  - cron: "30 1 * * *"
+
+jobs:
+  stale:
+
+    runs-on: ubuntu-latest
+
+    steps:
+    - uses: actions/stale@v1
+      with:
+        repo-token: ${{ secrets.GITHUB_TOKEN }}
+        stale-pr-message: 'This Pull Request has been marked as stale'
+        stale-pr-label: 'stale'
+        days-before-stale: 180
+        days-before-close: 30
+        exempt-issue-labels: 'no-stale'

.rubocop.yml

@@ -0,0 +1,67 @@
+AllCops:
+  TargetRubyVersion: 3.3
+  NewCops: enable
+  Exclude:
+    - 'db/schema.rb'
+    - 'bin/*'
+    - 'node_modules/**/*'
+    - 'vendor/**/*'
+    - 'log/**/*'
+    - 'tmp/**/*'
+
+Layout/LineLength:
+  Max: 120
+
+Metrics/BlockLength:
+  Exclude:
+    - 'spec/**/*'
+    - 'test/**/*'
+  Max: 25
+
+Metrics/MethodLength:
+  Max: 15
+
+Metrics/ClassLength:
+  Max: 200
+
+Metrics/ModuleLength:
+  Max: 300
+
+Metrics/AbcSize:
+  Max: 20
+
+Metrics/ParameterLists:
+  Max: 5
+
+Metrics/PerceivedComplexity:
+  Max: 10
+
+Style/FrozenStringLiteralComment:
+  Enabled: true
+
+Style/StringLiterals:
+  EnforcedStyle: double_quotes
+
+Style/Documentation:
+  Enabled: true
+
+Lint/AmbiguousBlockAssociation:
+  Enabled: true
+
+Lint/UselessAssignment:
+  Enabled: true
+
+Style/TrailingCommaInArrayLiteral:
+  EnforcedStyleForMultiline: comma
+
+Style/TrailingCommaInHashLiteral:
+  EnforcedStyleForMultiline: comma
+
+Style/HashSyntax:
+  EnforcedStyle: ruby19
+
+Layout/IndentationConsistency:
+  Enabled: true
+
+Style/NestedParenthesizedCalls:
+  Enabled: true

Gemfile

@@ -8,3 +8,5 @@ group :development, :test do
   gem 'erubis'
   gem 'test-unit', '~> 3.0'
 end
+
+gem 'rubocop', require: false