Add Jenkins pipeline for building and pushing Docker images for yoga app

environment/infra/jenkins/build.app.image.Jenkinsfile

@@ -0,0 +1,70 @@
+pipeline {
+    agent any
+
+    environment {
+        DOCKER_IMAGE = 'yoga-app'
+        DOCKER_REGISTRY = 'docker.rschneider.hu/infra'
+        DOCKER_CREDENTIALS_ID = 'your-docker-credentials-id'
+CURRENT_VERSION = ''
+    }
+
+    stages {
+        stage('Checkout') {
+            steps {
+                                git branch: 'main', credentialsId: 'rschneider_gitea.rschneider.hu', poll: false, url: 'https://gitea.rschneider.hu/rschneider/yogastic.git'
+            }
+        }
+       
+
+         stage('Build Docker image') {
+            steps {
+                sh """
+                cd environment/dev/docker/app/scripts
+                bash ./build.docker.build.sh
+                """
+            }
+        }
+
+        stage('Commit & Push version image') {
+            steps { 
+                script {
+                CURRENT_VERSION = readFile('environment/dev/docker/app/scripts/version.txt').trim()
+                env.CURRENT_VERSION = CURRENT_VERSION
+                }
+                withCredentials([
+            gitUsernamePassword(credentialsId: 'rschneider_gitea.rschneider.hu', gitToolName: 'Default')
+        ]) {
+                sh """
+                cd environment/dev/docker/app/scripts
+                git config user.email "jenkins@rschneider.hu"
+                git config user.name "Jenkins"
+                git status
+                git add version.txt
+                git commit -m "[ci-skip] Update version to ${CURRENT_VERSION}"
+                git push --set-upstream origin main
+                """
+        }
+            }
+        }
+
+        stage('Push Docker image') {
+            steps {
+                withCredentials([usernamePassword(credentialsId: 'rschneider-docker-reop1', passwordVariable: 'PASSWORD', usernameVariable: 'USERNAME')]) {
+                sh """
+                echo $PASSWORD | docker login -u $USERNAME --password-stdin ${DOCKER_REGISTRY}
+                cd environment/dev/docker/app/scripts
+                
+                bash ./build.docker.push.sh
+                """
+            }
+               
+            }
+        }
+    }
+ 
+    post {
+        always {
+            cleanWs()
+        }
+    }
+}