Use two different jenkinsfile

Jenkinsfile.ci

@@ -0,0 +1,89 @@
+pipeline {
+  agent none
+
+  options {
+    timestamps()
+  }
+
+  environment {
+    NODE_OPTIONS = '--max_old_space_size=2048'
+  }
+
+  stages {
+
+    stage('Init') {
+      agent any
+      steps {
+        script {
+          env.COMMIT_AUTHOR = sh(
+            script: "git show -s --format=%an HEAD",
+            returnStdout: true
+          ).trim()
+
+          env.COMMIT_SHORT = sh(
+            script: "git rev-parse --short HEAD",
+            returnStdout: true
+          ).trim()
+        }
+
+        echo "CI build for commit ${env.COMMIT_SHORT} by ${env.COMMIT_AUTHOR}"
+      }
+    }
+
+    /* =========================
+       BACKEND CI
+       ========================= */
+
+    stage('Backend: lint & test') {
+      agent {
+        docker {
+          image 'python:3.11-slim'
+          args '-u root'
+        }
+      }
+      steps {
+        dir('backend') {
+          sh '''
+            set -e
+            python -m venv .venv
+            . .venv/bin/activate
+            pip install --upgrade pip
+            pip install -r requirements-dev.txt
+            ruff check app tests
+            pytest
+          '''
+        }
+      }
+    }
+
+    /* =========================
+       FRONTEND CI
+       ========================= */
+
+    stage('Frontend: check & build') {
+      agent {
+        docker {
+          image 'node:20-slim'
+        }
+      }
+      steps {
+        dir('frontend') {
+          sh '''
+            set -e
+            npm install --no-progress --no-audit --prefer-offline
+            npm run check
+            npm run build
+          '''
+        }
+      }
+    }
+
+
+  }
+
+  post {
+    always {
+      cleanWs()
+    }
+  }
+}