diff --git a/Jenkinsfile.pjt b/Jenkinsfile.pjt
index e0f84dc..6d44fa7 100644
--- a/Jenkinsfile.pjt
+++ b/Jenkinsfile.pjt
@@ -95,7 +95,27 @@ pipeline {
       }
     }
 
-    stage('6) Copy compose') {
+    stage('6) Jenkins cleanup') {
+      steps {
+        sh '''
+          set -e
+
+          echo "[1/4] Remove pushed image from Jenkins"
+          docker rmi ${REGISTRY_HOST}/${IMAGE_REPO}:${IMAGE_TAG} 2>/dev/null || true
+
+          echo "[2/4] Remove dangling images"
+          docker image prune -f
+
+          echo "[3/4] Remove old build cache (safe-ish)"
+          # 빌드 캐시만 정리: 다른 컨테이너/볼륨에는 영향 적음
+          docker builder prune -f || true
+
+          echo "[4/4] Skip docker system prune --volumes (too aggressive on shared nodes)"
+        '''
+      }
+    }
+
+    stage('7) Copy compose') {
       steps {
         sshagent(['ssh-pjt']) {
           sh '''
@@ -113,7 +133,7 @@ pipeline {
       }
     }
 
-    stage('7) Remote docker registry login') {
+    stage('8) Remote docker registry login') {
       steps {
         sshagent(['ssh-pjt']) {
           withCredentials([usernamePassword(
@@ -143,7 +163,7 @@ pipeline {
       }
     }
 
-    stage('8) Remote docker pull') {
+    stage('9) Remote docker pull') {
       steps {
         sshagent(['ssh-pjt']) {
           sh '''
@@ -162,7 +182,7 @@ pipeline {
       }
     }
 
-    stage('9) Remote docker down & up') {
+    stage('10) Remote docker down & up') {
       steps {
         sshagent(['ssh-pjt']) {
           sh '''
@@ -187,5 +207,134 @@ pipeline {
       }
     }
 
+    stage('11) Remote cleanup') {
+      steps {
+        sshagent(['ssh-pjt']) {
+          sh '''
+            set -e
+            ssh -p ${SSH_PORT} -o StrictHostKeyChecking=no -o UserKnownHostsFile=/dev/null \
+              ${SSH_USER}@${SSH_HOST} \
+              'set -e
+
+               echo "[0] Collect images used by running containers"
+               RUNNING_IMAGES=$(docker ps -q | xargs -r docker inspect --format="{{.Image}}" | sort -u)
+
+               echo "[1/3] Remove old registry images (except running ones)"
+               docker images '"${REGISTRY_HOST}/${IMAGE_REPO}"' --format "{{.ID}} {{.CreatedAt}}" | \
+                 sort -k2 -r | \
+                 awk "{print \$1}" | \
+                 while read IMAGE_ID; do
+                   echo "$RUNNING_IMAGES" | grep -q "$IMAGE_ID" && continue
+                   docker rmi -f "$IMAGE_ID" 2>/dev/null || true
+                 done
+
+               echo "[2/3] Remove dangling images (safe)"
+               docker image prune -f
+
+               echo "[3/3] Remove unused volumes (safe)"
+               docker volume prune -f
+              '
+          '''
+        }
+      }
+    }
+
+    stage('12) Registry cleanup (keep last 5 + protect running)') {
+      steps {
+        sshagent(['ssh-pjt']) {
+          sh '''
+            set -e
+            ssh -p ${SSH_PORT} -o StrictHostKeyChecking=no -o UserKnownHostsFile=/dev/null \
+              ${SSH_USER}@${SSH_HOST} \
+              'set -e
+
+               REGISTRY_URL="https://'${REGISTRY_HOST}'"     # 예: https://registry.pjt.kr
+               REPO="'${IMAGE_REPO}'"                        # 예: alist/api
+               KEEP=5
+
+               # (옵션) Basic Auth 쓰면 아래 활성화하고 curl에 -u "$AUTH" 추가
+               # AUTH="user:pass"
+
+               echo "[0/5] Ensure jq exists"
+               if ! command -v jq >/dev/null 2>&1; then
+                 sudo apt-get update -y
+                 sudo apt-get install -y jq
+               fi
+
+               echo "[1/5] Collect running tags to protect"
+               # 현재 서버에서 실행 중인 컨테이너가 사용하는 해당 레포 이미지 태그만 추출
+               RUNNING_TAGS=$(docker ps --format "{{.Image}}" | \
+                 grep -E "^'${REGISTRY_HOST}'/'${IMAGE_REPO}':" | \
+                 awk -F: "{print \\$2}" | sort -u || true)
+
+               if [ -n "$RUNNING_TAGS" ]; then
+                 echo "Running tags (protected):"
+                 echo "$RUNNING_TAGS" | sed "s/^/  - /"
+               else
+                 echo "No running tags found for ${REGISTRY_HOST}/${IMAGE_REPO} (ok)"
+               fi
+
+               echo "[2/5] Fetch tags from registry: $REPO"
+               TAGS=$(curl -fsS "$REGISTRY_URL/v2/$REPO/tags/list" | jq -r ".tags[]?" || true)
+               # Basic Auth 쓰면 위 curl을 아래로 바꿔:
+               # TAGS=$(curl -fsS -u "$AUTH" "$REGISTRY_URL/v2/$REPO/tags/list" | jq -r ".tags[]?" || true)
+
+               if [ -z "$TAGS" ]; then
+                 echo "No tags found in registry. Skip."
+                 exit 0
+               fi
+
+               echo "[3/5] Sort tags desc (tag must be sortable for 'latest' semantics)"
+               SORTED=$(echo "$TAGS" | sort -r)
+
+               KEEP_TAGS=$(echo "$SORTED" | head -n $KEEP)
+               DEL_CANDIDATES=$(echo "$SORTED" | tail -n +$((KEEP+1)))
+
+               echo "Keep tags (latest $KEEP):"
+               echo "$KEEP_TAGS" | sed "s/^/  - /"
+
+               echo "[4/5] Delete old tags except protected running tags"
+               for TAG in $DEL_CANDIDATES; do
+                 # 실행 중 태그는 무조건 스킵
+                 if [ -n "$RUNNING_TAGS" ] && echo "$RUNNING_TAGS" | grep -qx "$TAG"; then
+                   echo "Skip running tag: $REPO:$TAG"
+                   continue
+                 fi
+
+                 echo "Deleting $REPO:$TAG"
+
+                 DIGEST=$(curl -fsSI \
+                   -H "Accept: application/vnd.docker.distribution.manifest.v2+json" \
+                   "$REGISTRY_URL/v2/$REPO/manifests/$TAG" \
+                   | awk -F": " "/Docker-Content-Digest/ {print \\$2}" | tr -d "\\r")
+
+                 # Basic Auth 쓰면 위 curl을 아래로 바꿔:
+                 # DIGEST=$(curl -fsSI -u "$AUTH" \
+                 #   -H "Accept: application/vnd.docker.distribution.manifest.v2+json" \
+                 #   "$REGISTRY_URL/v2/$REPO/manifests/$TAG" \
+                 #   | awk -F": " "/Docker-Content-Digest/ {print \\$2}" | tr -d "\\r")
+
+                 if [ -z "$DIGEST" ]; then
+                   echo "  digest not found. skip $TAG"
+                   continue
+                 fi
+
+                 curl -fsS -X DELETE "$REGISTRY_URL/v2/$REPO/manifests/$DIGEST" || true
+                 # Basic Auth 쓰면:
+                 # curl -fsS -u "$AUTH" -X DELETE "$REGISTRY_URL/v2/$REPO/manifests/$DIGEST" || true
+               done
+
+               echo "[5/5] Garbage collect (reclaim disk space)"
+               # push가 진행 중이면 위험할 수 있으니, 배포 성공 후 마지막 단계에서만 실행 추천
+               docker exec registry registry garbage-collect /etc/docker/registry/config.yml
+
+               echo "Registry cleanup done."
+              '
+          '''
+        }
+      }
+    }
+
+
   }
 }