Add groovy script for docker hub credentials creation

jenkins/configuration/dockerCredentials.groovy

@@ -0,0 +1,42 @@
+// This script is based on the source bellow:
+// https://gist.github.com/ivan-pinatti/830ec918781060df03b12efd4a14096e
+import com.cloudbees.plugins.credentials.*
+import com.cloudbees.plugins.credentials.common.*
+import com.cloudbees.plugins.credentials.domains.Domain
+import com.cloudbees.plugins.credentials.impl.*
+import jenkins.model.Jenkins
+import org.jenkinsci.plugins.plaincredentials.impl.*
+
+def dockerhubUser = new File("/run/secrets/jenkins_dockerhub_username").text.trim()
+def dockerhubPassword = new File("/run/secrets/jenkins_dockerhub_password").text.trim()
+
+def jenkinsKeyUsernameWithPasswordParameters = [
+        description: 'Apella docker-hub',
+        id         : 'docker-hub-apella',
+        password   : dockerhubPassword,
+        userName   : dockerhubUser
+]
+
+// Gets Jenkins instance
+Jenkins jenkins = Jenkins.getInstance()
+
+// Gets credentials domain
+def globalDomain = Domain.global()
+
+// Gets credentials store
+def credentialsStore = jenkins.getExtensionList('com.cloudbees.plugins.credentials.SystemCredentialsProvider')[0].getStore()
+
+// Defines username and password credentials
+def jenkinsKeyUsernameWithPassword = new UsernamePasswordCredentialsImpl(
+        CredentialsScope.GLOBAL,
+        jenkinsKeyUsernameWithPasswordParameters.id,
+        jenkinsKeyUsernameWithPasswordParameters.description,
+        jenkinsKeyUsernameWithPasswordParameters.userName,
+        jenkinsKeyUsernameWithPasswordParameters.secret
+)
+
+// Adds credential to store
+credentialsStore.addCredentials(globalDomain, jenkinsKeyUsernameWithPassword)
+
+// Saves to disk
+jenkins.save()

jenkins/configuration/security.groovy

@@ -14,12 +14,12 @@ import jenkins.security.s2m.AdminWhitelistRule
 def instance = Jenkins.getInstance()
 
 // Automate Admin Setup & Plugin Installs
-def user = new File("/run/secrets/jenkins_admin_username").text.trim()
+def adminUser = new File("/run/secrets/jenkins_admin_username").text.trim()
-def pass = new File("/run/secrets/jenkins_admin_password").text.trim()
+def adminPassword = new File("/run/secrets/jenkins_admin_password").text.trim()
 
 // Create Admin User
 def hudsonRealm = new HudsonPrivateSecurityRealm(false)
-hudsonRealm.createAccount(user, pass)
+hudsonRealm.createAccount(adminUser, adminPassword)
 instance.setSecurityRealm(hudsonRealm)
 
 // Set Auth to Full Control Once Logged In