Update Jenkinsfile with build.docker create and push stages

[btsanil]

pipeline {
agent any

stages {
    stage('Clone Repo') {
        steps {
            git 'https://github.com/your-username/your-repo.git'
        }
    }

    stage('Build Docker Image') {
        steps {
            sh 'docker build -t my-app:latest .'
        }
    }

    stage('Run Docker Container') {
        steps {
            sh 'docker run -d -p 8080:80 --name my-container my-app:latest'
        }
    }
}

}