diff --git a/.github/workflows/cd.yml b/.github/workflows/cd.yml
index 67622168..8b9f63bf 100644
--- a/.github/workflows/cd.yml
+++ b/.github/workflows/cd.yml
@@ -80,20 +80,23 @@ jobs:
           host: ${{ secrets.EC2_HOST }}
           username: ubuntu
           key: ${{ secrets.EC2_SSH_KEY }}
-          script: |
-            if [ "${{ steps.current_version.outputs.version }}" == "blue" ]; then
-              NEW_VERSION="green"
-              NEW_PORT=8081
-            else
-              NEW_VERSION="blue"
-              NEW_PORT=8080
-            fi
-            sudo docker pull kimsongmok/splanet:${{ env.IMAGE_TAG }}
-            sudo docker network inspect splanet >/dev/null 2>&1 || sudo docker network create splanet
-            sudo docker run -d --name splanet_${NEW_VERSION} \
-              --network splanet \
-              --env-file /home/ubuntu/env.properties \
-              -p ${NEW_PORT}:8080 --restart unless-stopped kimsongmok/splanet:${{ env.IMAGE_TAG }}
+          envs:
+            CURRENT_VERSION: ${{ steps.current_version.outputs.version }}
+            IMAGE_TAG: ${{ env.IMAGE_TAG }}
+        script: |
+          if [ "$CURRENT_VERSION" == "blue" ]; then
+            NEW_VERSION="green"
+            NEW_PORT=8081
+          else
+            NEW_VERSION="blue"
+            NEW_PORT=8080
+          fi
+          sudo docker pull kimsongmok/splanet:$IMAGE_TAG
+          sudo docker network inspect splanet >/dev/null 2>&1 || sudo docker network create splanet
+          sudo docker run -d --name splanet_${NEW_VERSION} \
+            --network splanet \
+            --env-file /home/ubuntu/env.properties \
+            -p ${NEW_PORT}:8080 --restart unless-stopped kimsongmok/splanet:$IMAGE_TAG
 
       - name: Wait for Spring Boot Application to Start
         uses: appleboy/ssh-action@v0.1.6
@@ -101,30 +104,31 @@ jobs:
           host: ${{ secrets.EC2_HOST }}
           username: ubuntu
           key: ${{ secrets.EC2_SSH_KEY }}
-          script: |
-            if [ "${{ steps.current_version.outputs.version }}" == "blue" ]; then
-              NEW_VERSION="green"
-              NEW_PORT=8081
-            else
-              NEW_VERSION="blue"
-              NEW_PORT=8080
+          envs:
+            CURRENT_VERSION: ${{ steps.current_version.outputs.version }}
+            NEW_VERSION: ${{ steps.current_version.outputs.version == 'blue' && 'green' || 'blue' }}
+        script: |
+          if [ "$CURRENT_VERSION" == "blue" ]; then
+            NEW_PORT=8081
+          else
+            NEW_PORT=8080
+          fi
+
+          echo "Waiting for the application to be healthy on http://api.splanet.co.kr:${NEW_PORT}/actuator/health..."
+          for i in {1..30}; do
+            if curl -s http://api.splanet.co.kr:${NEW_PORT}/actuator/health | grep '"status":"UP"' > /dev/null; then
+              echo "Application is healthy and ready to receive traffic."
+              break
             fi
+            echo "Waiting for application to start... (Attempt $i)"
+            sleep 5
+          done
 
-            echo "Waiting for the application to be healthy on http://api.splanet.co.kr:${NEW_PORT}/actuator/health..."
-            for i in {1..30}; do
-              if curl -s http://api.splanet.co.kr:${NEW_PORT}/actuator/health | grep '"status":"UP"' > /dev/null; then
-                echo "Application is healthy and ready to receive traffic."
-                break
-              fi
-              echo "Waiting for application to start... (Attempt $i)"
-              sleep 5
-            done
-
-            if [ "$i" -eq 30 ]; then
-              echo "Application did not start successfully within the expected time."
-              sudo docker logs splanet_${NEW_VERSION}
-              exit 1
-            fi
+          if [ "$i" -eq 30 ]; then
+            echo "Application did not start successfully within the expected time."
+            sudo docker logs splanet_${NEW_VERSION}
+            exit 1
+          fi
 
       - name: Update Load Balancer Target Group
         uses: appleboy/ssh-action@v0.1.6
@@ -132,14 +136,16 @@ jobs:
           host: ${{ secrets.EC2_HOST }}
           username: ubuntu
           key: ${{ secrets.EC2_SSH_KEY }}
-          script: |
-            if [ "${{ steps.current_version.outputs.version }}" == "blue" ]; then
-              TARGET_GROUP_ARN="arn:aws:elasticloadbalancing:ap-northeast-2:${{ secrets.AWS_ACCOUNT_ID }}:targetgroup/splanet-8081/${{ secrets.ARN_ID_8081 }}"
-            else
-              TARGET_GROUP_ARN="arn:aws:elasticloadbalancing:ap-northeast-2:${{ secrets.AWS_ACCOUNT_ID }}:targetgroup/splanet/${{ secrets.ARN_ID_8080 }}"
-            fi
-            aws elbv2 modify-listener --listener-arn arn:aws:elasticloadbalancing:ap-northeast-2:${{ secrets.AWS_ACCOUNT_ID }}:listener/app/splanet/${{ secrets.ARN_ID_443 }} \
-              --default-actions Type=forward,TargetGroupArn=$TARGET_GROUP_ARN
+          envs:
+            CURRENT_VERSION: ${{ steps.current_version.outputs.version }}
+        script: |
+          if [ "$CURRENT_VERSION" == "blue" ]; then
+            TARGET_GROUP_ARN="arn:aws:elasticloadbalancing:ap-northeast-2:${{ secrets.AWS_ACCOUNT_ID }}:targetgroup/splanet-8081/${{ secrets.ARN_ID_8081 }}"
+          else
+            TARGET_GROUP_ARN="arn:aws:elasticloadbalancing:ap-northeast-2:${{ secrets.AWS_ACCOUNT_ID }}:targetgroup/splanet/${{ secrets.ARN_ID_8080 }}"
+          fi
+          aws elbv2 modify-listener --listener-arn arn:aws:elasticloadbalancing:ap-northeast-2:${{ secrets.AWS_ACCOUNT_ID }}:listener/app/splanet/${{ secrets.ARN_ID_443 }} \
+            --default-actions Type=forward,TargetGroupArn=$TARGET_GROUP_ARN
 
       - name: Remove Old Version
         uses: appleboy/ssh-action@v0.1.6
@@ -147,11 +153,13 @@ jobs:
           host: ${{ secrets.EC2_HOST }}
           username: ubuntu
           key: ${{ secrets.EC2_SSH_KEY }}
-          script: |
-            if [ "${{ steps.current_version.outputs.version }}" != "none" ]; then
-              sudo docker stop splanet_${{ steps.current_version.outputs.version }}
-              sudo docker rm splanet_${{ steps.current_version.outputs.version }}
-            fi
+          envs:
+            CURRENT_VERSION: ${{ steps.current_version.outputs.version }}
+        script: |
+          if [ "$CURRENT_VERSION" != "none" ]; then
+            sudo docker stop splanet_$CURRENT_VERSION
+            sudo docker rm splanet_$CURRENT_VERSION
+          fi
 
       - name: Clean up old Docker images
         uses: appleboy/ssh-action@v0.1.6
@@ -159,6 +167,6 @@ jobs:
           host: ${{ secrets.EC2_HOST }}
           username: ubuntu
           key: ${{ secrets.EC2_SSH_KEY }}
-          script: |
-            docker image ls --format "{{.ID}} {{.Repository}}:{{.Tag}}" | grep 'kimsongmok/splanet' | tail -n +4 | awk '{print $1}' | xargs docker rmi -f
-            sudo docker system prune -f
+        script: |
+          docker image ls --format "{{.ID}} {{.Repository}}:{{.Tag}}" | grep 'kimsongmok/splanet' | tail -n +4 | awk '{print $1}' | xargs docker rmi -f
+          sudo docker system prune -f