Jenkinsfile

pipeline {
    agent any

    environment {
        GIT_URL = "https://github.com/repo_url.git" // Github repository url
        REGISTRY_URL="127.0.0.1:5000/username/backend" // Registry url
        GITHUB_TOKEN=credentials('github_token')
        BUILD_BRANCH='master' // branch 
    }

    triggers {
        githubPush()
    }

    stages {
        stage(' Setup Environment') {
            steps{
                dir("repo_url"){
                    git branch: BRANCH_NAME, url: GIT_URL, credentialsId: 'github_token'
                }
            }
        }
        stage("Build Application") {
            steps{
                withCredentials([string(
                        credentialsId: 'github-api-token',
                        variable: 'GITHUB_API_TOKEN'
                     )]) {
                        sh 'echo $GITHUB_API_TOKEN | docker login 127.0.0.1:5000 -u devops --password-stdin' // devops => docker registry user
                     }
                sh "docker build . -t ${REGISTRY_URL}:${BUILD_NUMBER} -f Dockerfile"
                sh "docker tag ${REGISTRY_URL}:${BUILD_NUMBER} ${REGISTRY_URL}:latest"
                sh "docker push ${REGISTRY_URL}:latest"
                sh "docker push ${REGISTRY_URL}:${BUILD_NUMBER}"
                
                sh "docker image rm -f ${REGISTRY_URL}:latest"
                sh "docker image rm -f ${REGISTRY_URL}:${BUILD_NUMBER}"
            }
        }

        stage("Run Application to Development Servers"){
            when {
                expression {
                    BRANCH_NAME == 'master'
                }
            }
            steps{
                withCredentials([string(
                        credentialsId: 'github-api-token',
                        variable: 'GITHUB_API_TOKEN'
                     )]) {
                        // sshagent => server_user => ssh server_user key
                        sshagent(['server_user']) { 
                            sh 'ssh -o StrictHostKeyChecking=no server_user@127.0.0.1 "/home/server_user/deployer.sh --image=$REGISTRY_URL:$BUILD_NUMBER --container-port=4001 --system-port=4001 --registry-host=127.0.0.1:5000 --container-name=backend --registry-token=$GITHUB_API_TOKEN --registry-user=devops"'
                        }
                     }
            }
        }
    }
}

// deployer.sh => https://github.com/ismoilovdevml/devops-tools/tree/master/Docker/deployer.sh