Add caddy version control, explicit portfolio version, cache management

Jenkinsfile

@@ -4,10 +4,15 @@ pipeline {
         DOCKER_HOST = "unix:///var/run/docker.sock"
     }
     stages {
-        stage('Docker Build') {
+        stage('Build') {
             steps {
-                echo "Build new docker image from ${env.BRANCH_NAME}..."
-                sh "docker build -t portfolio:${env.BRANCH_NAME} ."
+                // Get Caddy version
+                sh "cp .env.dist .env"
+                // Push portfolio version
+                sh "echo '\nPORTFOLIO_VERSION=${env.BRANCH_NAME}-${env.BUILD_NUMBER}' >> .env"
+
+                echo "Building new portfolio version..."
+                sh "docker compose build"
             }
         }
         stage('Deploy') {
@@ -19,6 +24,9 @@ pipeline {
                 echo "Deploy new portfolio version..."
                 sh "docker compose up -d"
 
+                // Update caddy-reverse-proxy cache
+                sh "docker exec caddy-reverse-proxy caddy reload --config /etc/caddy/Caddyfile"
+
                 // Keep updated docker-compose.yml and Caddyfile for safety
                 sh "cp docker-compose.yml /backup-portfolio/docker-compose.yml"
                 sh "docker cp portfolio:/etc/caddy/Caddyfile /backup-portfolio/Caddyfile"