Revamp Jenkins pipeline script

* Modified CI/CD workflow in the Jenkins pipeline script.
* Integrated Jenkins pipeline with Docker and Ansible to execute CI/CD pipeline.
* Removed Docker, Supervisor, and other configurations from the repository.

.gitignore

@@ -1,9 +1,4 @@
-downloads/jdk-*
-downloads/*.rpm
-downloads/*.deb
-downloads/*.tar.gz
-downloads/*.zip
-downloads/*.jar
 secret/*.pem
 secret/*.pub
+secret/node*
 tmp/*

README.md

@@ -1,2 +1,2 @@
 # Kickstart Jenkins
-The ultimate aim of this Jenkins starter-kit is to help you run build/test of sample CRM app using Jenkins freestyle and pipeline projects.
+Our Jenkins starter-kit repository contains Jenkins pipeline templates and other configurations needed to implement CI/CD workflow for workloads using Jenkins.

pipeline/crm.jenkinsfile

@@ -0,0 +1,118 @@
+pipeline {
+  agent any
+  parameters {
+    choice(
+      name:'test_environment',choices:['qaa','qab'],description:'Testing environment'
+    )
+  }
+  environment {
+    TEST_ENVIRONMENT=params.test_environment.toUpperCase()
+  }
+  stages {
+    stage('CI: Download sources') {
+      steps {
+        sh(
+          script:'git clone https://github.com/sloopstash/kickstart-docker.git kickstart-docker',
+          returnStatus:true
+        )
+        sh(
+          script:'git clone https://github.com/sloopstash/kickstart-ansible.git kickstart-ansible',
+          returnStatus:true
+        )
+      }
+    }
+    stage('CI: Build OCI images') {
+      steps {
+        dir('kickstart-docker') {
+          sh 'sudo docker image build -t sloopstash/base:v1.1.1 -f image/base/1.1.1/amazon-linux-2.dockerfile image/base/1.1.1/context'
+          sh 'sudo docker image build -t sloopstash/nginx:v1.14.0 -f image/nginx/1.14.0/amazon-linux-2.dockerfile image/nginx/1.14.0/context'
+          sh 'sudo docker image build -t sloopstash/python:v2.7 -f image/python/2.7/amazon-linux-2.dockerfile image/python/2.7/context'
+          sh 'sudo docker image build -t sloopstash/redis:v4.0.9 -f image/redis/4.0.9/amazon-linux-2.dockerfile image/redis/4.0.9/context'
+        }
+      }
+    }
+    stage('CI: Bootstrap testing environment') {
+      steps {
+        dir('kickstart-docker') {
+          sh "sudo docker compose -f compose/crm.yml --env-file compose/${TEST_ENVIRONMENT}.env -p sloopstash-${params.test_environment}-crm up -d"
+          sh "sudo docker container exec sloopstash-${params.test_environment}-crm-app-1 pip install pytest"
+        }
+      }
+    }
+    stage('CI: Execute test cases') {
+      environment {
+        APP_SOURCE='/opt/app/source'
+      }
+      steps {
+        sh "sudo docker container exec --workdir ${APP_SOURCE} sloopstash-${params.test_environment}-crm-app-1 pytest --junitxml=reports.xml script/test/main.py"
+      }
+      post {
+        // always {
+        //   junit 'reports.xml'
+        // }
+        success {
+          input 'App testing has been successful. Do you want to proceed deployment in staging environment?'
+        }
+      }
+    }
+    stage('CD: Bootstrap staging environment') {
+      steps {
+        dir('kickstart-ansible') {
+          sh 'sudo docker compose -f docker/compose/crm.yml --env-file docker/compose/STG.env -p sloopstash-stg-crm up -d --scale app=3 --scale nginx=2'
+        }
+      }
+    }
+    stage('CD: Execute deployment') {
+      steps {
+        dir('kickstart-ansible') {
+          ansiblePlaybook(
+            credentialsId:'ansible-node-ssh',
+            playbook:'playbook/redis.yml',
+            inventory:'inventory/stg',
+            tags:'setup,configure,stop,start'
+          )
+          ansiblePlaybook(
+            credentialsId:'ansible-node-ssh',
+            playbook:'playbook/crm/app.yml',
+            inventory:'inventory/stg',
+            tags:'setup,update,configure,stop,start',
+            limit:'sloopstash-stg-crm-app-1'
+          )
+          ansiblePlaybook(
+            credentialsId:'ansible-node-ssh',
+            playbook:'playbook/nginx.yml',
+            inventory:'inventory/stg',
+            tags:'setup,update,configure,stop,start',
+            limit:'sloopstash-stg-crm-nginx-1'
+          )
+        }
+      }
+      post {
+        success {
+          input 'Deployment has been successful. Do you want to proceed deployment in production environment?'
+        }
+      }
+    }
+  }
+  post {
+    always {
+      dir('kickstart-docker') {
+        sh "sudo docker compose -f compose/crm.yml --env-file compose/${TEST_ENVIRONMENT}.env -p sloopstash-${params.test_environment}-crm down"
+      }
+      dir('kickstart-ansible') {
+        sh 'sudo docker compose -f docker/compose/crm.yml --env-file docker/compose/STG.env -p sloopstash-stg-crm down'
+      }
+      emailext(
+        subject:'Jenkins: ${env.JOB_NAME} - ${currentBuild.currentResult}',
+        body:'${env.BUILD_NUMBER} ${env.JOB_NAME} execution ${currentBuild.currentResult}.\n Know more at ${env.BUILD_URL}.',
+        recipientProviders:[[$class:'DevelopersRecipientProvider'],[$class:'RequesterRecipientProvider']]
+      )
+    }
+    success {
+      cleanWs(
+        deleteDirs:true,
+        disableDeferredWipeout:true
+      )
+    }
+  }
+}