Added documentation and tests

Author: mrodm

README.md

@@ -80,6 +80,12 @@ github_actions_runner::instances:
       - self-hosted-custom1
 ```
 
+In case you are using Github Enterprise Server , you can define these two parameters to specify the correct urls:
+```yaml
+github_actions_runner::github_domain: "https://git.example.com"
+github_actions_runner::github_api: "https://git.example.com/api/v3"
+```
+
 ## Limitations
 
 Tested on Debian 9 stretch hosts only.

manifests/init.pp

@@ -37,6 +37,12 @@
 # * instances
 # Hash[String, Hash], Github Runner Instances to be managed.
 #
+# * github_domain
+# String, Base URL for Github Domain.
+#
+# * github_api
+# String, Base URL for Github API.
+#
 # * http_proxy
 # Optional[String], Proxy URL for HTTP traffic. More information at https://docs.github.com/en/actions/hosting-your-own-runners/using-a-proxy-server-with-self-hosted-runners.
 #

spec/classes/github_actions_runner_spec.rb

@@ -293,6 +293,52 @@
           is_expected.to contain_systemd__unit_file('github-actions-runner.first_runner.service').without_content(%r{Environment="no_proxy=example.com"})
         end
       end
+
+      context 'is expected to create a github_actions_runner installation with another URLs for domain and API' do
+        let(:params) do
+          super().merge(
+            'github_domain' => 'https://git.example.com',
+            'github_api' => 'https://git.example.com/api/v3',
+            'instances' => {
+              'first_runner' => {
+                'labels' => ['test_label1'],
+                'repo_name' => 'test_repo',
+              },
+            },
+          )
+        end
+
+        it do
+          is_expected.to contain_file('/some_dir/actions-runner-2.272.0/first_runner/configure_install_runner.sh').with_content(%r{--url https://git.example.com})
+          is_expected.to contain_file('/some_dir/actions-runner-2.272.0/first_runner/configure_install_runner.sh').with_content(%r{https://git.example.com/api/v3.* \| jq -r .token})
+        end
+      end
+
+      context 'is expected to create a github_actions_runner installation with another URLs for domain and API per instance' do
+        let(:params) do
+          super().merge(
+            'instances' => {
+              'first_runner' => {
+                'labels' => ['test_label1'],
+                'repo_name' => 'test_repo',
+              },
+              'second_runner' => {
+                'labels' => ['test_label1'],
+                'repo_name' => 'test_repo',
+                'github_domain' => 'https://git.example.foo',
+                'github_api' => 'https://git.example.foo/api/v2',
+              },
+            },
+          )
+        end
+
+        it do
+          is_expected.to contain_file('/some_dir/actions-runner-2.272.0/first_runner/configure_install_runner.sh').with_content(%r{--url https://github.com})
+          is_expected.to contain_file('/some_dir/actions-runner-2.272.0/first_runner/configure_install_runner.sh').with_content(%r{https://api.github.com/.* \| jq -r .token})
+          is_expected.to contain_file('/some_dir/actions-runner-2.272.0/second_runner/configure_install_runner.sh').with_content(%r{--url https://git.example.foo})
+          is_expected.to contain_file('/some_dir/actions-runner-2.272.0/second_runner/configure_install_runner.sh').with_content(%r{https://git.example.foo/api/v2/.* \| jq -r .token})
+        end
+      end
     end
   end
 end