Jenkinsfile.cd

@@ -88,20 +88,55 @@ pipeline {
         sh '''
           set -e
 
+          OLD_BACKEND_LATEST_ID=$(docker images -q cafeteria-backend:latest || true)
+          OLD_BACKEND_PREVIOUS_ID=$(docker images -q cafeteria-backend:previous || true)
+          OLD_FRONTEND_LATEST_ID=$(docker images -q cafeteria-frontend:latest || true)
+          OLD_FRONTEND_PREVIOUS_ID=$(docker images -q cafeteria-frontend:previous || true)
+
           docker build \
             --build-arg APP_VERSION=${APP_VERSION} \
             --build-arg GIT_COMMIT=${COMMIT_SHORT} \
             --build-arg COMMIT_AUTHOR="${COMMIT_AUTHOR}" \
             --build-arg BUILD_NUMBER=${BUILD_NUMBER} \
-            -t cafeteria-backend:${BUILD_NUMBER} \
             -t cafeteria-backend:latest \
             ./backend
 
           docker build \
             --build-arg VITE_API_BASE=${VITE_API_BASE} \
-            -t cafeteria-frontend:${BUILD_NUMBER} \
             -t cafeteria-frontend:latest \
             ./frontend
+
+          NEW_BACKEND_LATEST_ID=$(docker images -q cafeteria-backend:latest || true)
+          NEW_FRONTEND_LATEST_ID=$(docker images -q cafeteria-frontend:latest || true)
+
+          if [ -n "$OLD_BACKEND_LATEST_ID" ]; then
+            docker tag "$OLD_BACKEND_LATEST_ID" cafeteria-backend:previous
+          fi
+          if [ -n "$OLD_FRONTEND_LATEST_ID" ]; then
+            docker tag "$OLD_FRONTEND_LATEST_ID" cafeteria-frontend:previous
+          fi
+
+          if [ -n "$OLD_BACKEND_PREVIOUS_ID" ] && \
+             [ "$OLD_BACKEND_PREVIOUS_ID" != "$OLD_BACKEND_LATEST_ID" ] && \
+             [ "$OLD_BACKEND_PREVIOUS_ID" != "$NEW_BACKEND_LATEST_ID" ]; then
+            docker rmi "$OLD_BACKEND_PREVIOUS_ID" || true
+          fi
+
+          if [ -n "$OLD_FRONTEND_PREVIOUS_ID" ] && \
+             [ "$OLD_FRONTEND_PREVIOUS_ID" != "$OLD_FRONTEND_LATEST_ID" ] && \
+             [ "$OLD_FRONTEND_PREVIOUS_ID" != "$NEW_FRONTEND_LATEST_ID" ]; then
+            docker rmi "$OLD_FRONTEND_PREVIOUS_ID" || true
+          fi
+
+          cleanup_tags() {
+            repo="$1"
+            docker images --format "{{.Repository}}:{{.Tag}}" \
+              | awk -v repo="$repo" '$0 ~ "^"repo":" && $0 !~ /:latest$|:previous$/' \
+              | xargs -r docker rmi || true
+          }
+
+          cleanup_tags cafeteria-backend
+          cleanup_tags cafeteria-frontend
         '''
       }
     }
@@ -128,7 +163,7 @@ pipeline {
 
             echo "Deploying backend ${BUILD_NUMBER}"
 
-            BACKEND_TAG=${BUILD_NUMBER} FRONTEND_TAG=${BUILD_NUMBER} docker-compose up -d
+            BACKEND_TAG=latest FRONTEND_TAG=latest docker-compose up -d
           '''
         }
       }