Update CI job

Jenkinsfile.ci

@@ -38,11 +38,12 @@ pipeline {
       agent {
         docker {
           image 'python:3.11-slim'
-          args '-u root'
         }
       }
 
       environment {
+        HOME = "${WORKSPACE}"
+        PIP_CACHE_DIR = "${WORKSPACE}/.cache/pip"
         PYTHONDONTWRITEBYTECODE = 1
       }
 
@@ -50,12 +51,13 @@ pipeline {
         dir('backend') {
           sh '''
             set -e
+            mkdir -p "$PIP_CACHE_DIR" "$WORKSPACE/.cache/pytest"
             python -m venv .venv
             . .venv/bin/activate
             pip install --upgrade pip
             pip install -r requirements-dev.txt
             ruff check app tests
-            pytest
+            pytest -o cache_dir="$WORKSPACE/.cache/pytest"
           '''
         }
       }
@@ -71,10 +73,15 @@ pipeline {
           image 'node:20-slim'
         }
       }
+      environment {
+        HOME = "${WORKSPACE}"
+        NPM_CONFIG_CACHE = "${WORKSPACE}/.cache/npm"
+      }
       steps {
         dir('frontend') {
           sh '''
             set -e
+            mkdir -p "$NPM_CONFIG_CACHE"
             npm install --no-progress --no-audit --prefer-offline
             npm run check
             npm run build
@@ -83,11 +90,11 @@ pipeline {
       }
     }
 
-    stage('Cleanup') {
+  }
-        agent any
+
-        steps {
+  post {
-            cleanWs()
+    always {
-        }
+      cleanWs()
     }
   }
 }