Updated jenkins file

Jenkinsfile

@@ -1,16 +1,29 @@
 pipeline {
     agent any
     stages {
-	stage('docker build') {
-	    steps {
-		echo 'Starting docker image build'
-		script {
-		    docker.withRegistry("https://pkg.northcode.no", 'docker-login') {
-			    def image = docker.build("pkg.northcode.no/rollux")
-			    image.push()
-	   	    }
+		stage('build') {
+			agent {
+				docker {
+					image 'rust'
+					reuseNode true
+				}
+			}
+			steps {
+				sh 'cargo build --release'
+				stash includes: 'target/release/rollux', name: 'app'
+			}
+		}
+		stage('docker build') {
+			steps {
+				unstash 'app'
+				echo 'Starting docker image build'
+				script {
+					docker.withRegistry("https://pkg.northcode.no", 'docker-login') {
+						def image = docker.build("pkg.northcode.no/rollux")
+						image.push()
+					}
+				}
+			}
 		}
-	    }
 	}
-    }
 }