Rollback when failed deploy

Jenkinsfile

@@ -104,17 +104,53 @@ pipeline {
         sh '''
         set -e
 
-        docker rm -f cafeteria-backend cafeteria-frontend 2>/dev/null || true
+        : "${BACKEND_PORT:?Missing BACKEND_PORT}"
+        : "${BACKEND_HEALTH_URL:?Missing BACKEND_HEALTH_URL}"
+        : "${FRONTEND_PORT:?Missing FRONTEND_PORT}"
+        : "${FRONTEND_HEALTH_URL:?Missing FRONTEND_HEALTH_URL}"
+
+
+        # Backend
+        docker tag cafeteria-backend:latest cafeteria-backend:previous || true
+        docker rm -f cafeteria-backend  2>/dev/null || true
 
         docker run -d \
           --name cafeteria-backend \
-          -p 8000:8000 \
+          -p "$BACKEND_PORT":"$BACKEND_PORT" \
           cafeteria-backend:latest
 
+        sleep 5
+
+        if ! curl -fs "$BACKEND_HEALTH_URL"; then
+            echo "Backend failed, rollback"
+            docker rm -f cafeteria-backend
+            docker run -d \
+                --name cafeteria-backend \
+                -p "$BACKEND_PORT":"$BACKEND_PORT" \
+                cafeteria-backend:previous
+            exit 1
+        fi
+
+        # Frontend
+        docker tag cafeteria-frontend:latest cafeteria-frontend:previous || true
+        docker rm -f cafeteria-frontend 2>/dev/null || true
+
         docker run -d \
           --name cafeteria-frontend \
-          -p 3000:80 \
+          -p "$FRONTEND_PORT":80 \
           cafeteria-frontend:latest
+
+        sleep 3
+
+        if ! curl -fs "$FRONTEND_HEALTH_URL"; then
+            echo "Frontend failed, rollback"
+            docker rm -f cafeteria-frontend
+            docker run -d \
+                --name cafeteria-frontend \
+                -p "$FRONTEND_PORT":80 \
+                cafeteria-frontend:previous
+            exit 1
+        fi
         '''
       }
     }