diff --git a/.github/workflows/be_cd-test.yml b/.github/workflows/be_cd-test.yml
index 80030354e..ae068096e 100644
--- a/.github/workflows/be_cd-test.yml
+++ b/.github/workflows/be_cd-test.yml
@@ -40,8 +40,8 @@ jobs:
 
       - name: Image build and push
         run: |
-          docker build --build-arg PROFILE=test --build-arg DEPENDENCY=build/dependency -t ${{ secrets.DOCKER_REPO_NAME }}/springboot-app:test-latest --platform linux/arm64 .
-          docker push ${{ secrets.DOCKER_REPO_NAME }}/springboot-app:test-latest
+          docker build --build-arg PROFILE=test --build-arg DEPENDENCY=build/dependency -t ${{ secrets.DOCKER_REPO_NAME }}/springboot-app --platform linux/arm64 .
+          docker push ${{ secrets.DOCKER_REPO_NAME }}/springboot-app
 
       - name: Upload docker-compose yaml script to artifact
         uses: actions/upload-artifact@v4
@@ -69,6 +69,12 @@ jobs:
 
       - name: Extract secrets as .be_app-env file
         run: |
+          chmod +x ./deploy.sh
+          source ./deploy.sh
+
+          echo "BLUE_PORT=$BLUE_PORT" >> $GITHUB_ENV
+          echo "GREEN_PORT=$GREEN_PORT" >> $GITHUB_ENV
+          
           cat <<EOF > ${{ secrets.DOCKER_COMPOSE_YAML_PATH }}/.be_app-env
 
           # Docker Hub info from Github Secrets
@@ -94,48 +100,27 @@ jobs:
           INSTANCE_NAME=${{ secrets.INSTANCE_A_NAME }}
           
           # Server App
-          BLUE_SERVER_BINDING_PORT=${{ secrets.BLUE_SERVER_BINDING_PORT }}
-          GREEN_SERVER_BINDING_PORT=${{ secrets.GREEN_SERVER_BINDING_PORT }}
+          BLUE_SERVER_BINDING_PORT=${BLUE_PORT}
+          GREEN_SERVER_BINDING_PORT=${GREEN_PORT}
           SERVER_LOGS_PATH=${{ secrets.SERVER_LOGS_PATH }}
           EOF
 
-      - name: Stop and remove existing containers
-        run: |
-          sudo docker-compose --env-file ${{ secrets.DOCKER_COMPOSE_YAML_PATH }}/.be_app-env -f ${{ secrets.DOCKER_COMPOSE_YAML_PATH }}/be_app-docker-compose.yml down --rmi all
-      - name: Deploy docker container
-        run: |
-          sudo docker-compose --env-file ${{ secrets.DOCKER_COMPOSE_YAML_PATH }}/.be_app-env -f ${{ secrets.DOCKER_COMPOSE_YAML_PATH }}/be_app-docker-compose.yml up -d
-
-      # 실행중인 서버 확인
-      - name: Determine Active and Inactive Ports (Blue/Green)
-        id: determine-ports
+      - name: Start the new (green/blue) environment
         run: |
-          ip="127.0.0.1"
-          ports=(8080 8081)
-          for port in "${ports[@]}"; do
-            RESPONSE=$(curl -s http://$ip:$port/api/actuator/health)
-            IS_ACTIVE=$(echo ${RESPONSE} | grep 'UP' | wc -l)
-            if [ $IS_ACTIVE -eq 1 -a $port -eq "8080" ]; then
-              echo "BLUE_PORT=8080" >> $GITHUB_ENV
-              echo "GREEN_PORT=8081" >> $GITHUB_ENV
-            elif [ $IS_ACTIVE -eq 1 -a $port -eq "8081" ]; then
-              echo "BLUE_PORT=8081" >> $GITHUB_ENV
-              echo "GREEN_PORT=8080" >> $GITHUB_ENV
-            fi
-          done
+          sudo docker-compose --env-file ${{ secrets.DOCKER_COMPOSE_YAML_PATH }}/.be_app-env -f ${{ secrets.DOCKER_COMPOSE_YAML_PATH }}/be_app-docker-compose.yml -p $GREEN_PORT up -d
 
-      - name: Start the new (green/blue) environment
+      - name: remove old spring-app image
         run: |
-          sudo docker-compose --env-file ${{ secrets.DOCKER_COMPOSE_YAML_PATH }}/.be_app-env -f ${{ secrets.DOCKER_COMPOSE_YAML_PATH }}/be_app-docker-compose.yml -p ${{ env.GREEN_PORT }} up -d
+          sudo docker image rm -f coduo2024/springboot-app;
 
       - name: Wait for new environment to be healthy
         run: |
-          until sudo docker inspect --format '{{json .State.Health.Status}}' ${env.GREEN_PORT}_springboot-app | grep "healthy"; do sleep 5; done
+          until curl -sf http://localhost:${GREEN_PORT}/api/actuator/health | grep "UP"; do sleep 5; done
 
-      - name: Switch traffic to new environment
+      - name: Reload NGINX 
         run: |
-          sudo docker-compose --env-file ${{ secrets.DOCKER_COMPOSE_YAML_PATH }}/.be_app-env -f ${{ secrets.DOCKER_COMPOSE_YAML_PATH }}/be_app-docker-compose.yml -p ${{ env.GREEN_PORT }} up -d --scale springboot-app=1
+          sudo systemctl reload nginx
 
       - name: Stop and remove the old environment
         run: |
-          sudo docker-compose --env-file ${{ secrets.DOCKER_COMPOSE_YAML_PATH }}/.be_app-env -f ${{ secrets.DOCKER_COMPOSE_YAML_PATH }}/be_app-docker-compose.yml -p ${{ env.BLUE_PORT }} down
+          sudo docker-compose --env-file ${{ secrets.DOCKER_COMPOSE_YAML_PATH }}/.be_app-env -f ${{ secrets.DOCKER_COMPOSE_YAML_PATH }}/be_app-docker-compose.yml -p $BLUE_PORT down
diff --git a/backend/be_app-docker-compose.yml b/backend/be_app-docker-compose.yml
index c232f4106..f6e3dcb21 100644
--- a/backend/be_app-docker-compose.yml
+++ b/backend/be_app-docker-compose.yml
@@ -1,38 +1,10 @@
 services:
-
-  springboot-blue:
-    container_name: coduo_springboot-app-blue
-    image: ${DOCKER_REPO_NAME}/springboot-app:test-latest
-    platform: linux/arm64
-    ports:
-      - "${BLUE_SERVER_BINDING_PORT}:8080"
-    volumes:
-      - ${SERVER_LOGS_PATH}/springboot-app/blue:/logs
-      - ${SERVER_LOGS_PATH}/springboot-app/backup/blue:/logs/backup
-    environment:
-      SPRING_DATASOURCE_REPLICA_MASTER_JDBC-URL: ${MASTER_DB_URL}
-      SPRING_DATASOURCE_REPLICA_MASTER_USERNAME: ${MASTER_DB_USERNAME}
-      SPRING_DATASOURCE_REPLICA_MASTER_PASSWORD: ${MASTER_DB_PASSWORD}
-      SPRING_DATASOURCE_REPLICA_SLAVE_JDBC-URL: ${SLAVE_DB_URL}
-      SPRING_DATASOURCE_REPLICA_SLAVE_USERNAME: ${SLAVE_DB_USERNAME}
-      SPRING_DATASOURCE_REPLICA_SLAVE_PASSWORD: ${SLAVE_DB_PASSWORD}
-      SPRING_JPA_HIBERNATE_DDL-AUTO: ${DDL_AUTO}
-      OAUTH_GITHUB_CLIENT_ID: ${CLIENT_ID}
-      OAUTH_GITHUB_CLIENT_SECRET: ${CLIENT_SECRET}
-      OAUTH_GITHUB_REDIRECT_URI: ${CLIENT_REDIRECT_URI}
-      JWT_SIGN_KEY: ${JWT_KEY}
-      EC2_PREFIX: ${INSTANCE_NAME}
-      SERVER_PORT: ${BLUE_SERVER_BINDING_PORT}
-    restart: on-failure
-    networks:
-      - coduo_net
-
   springboot-green:
-    container_name: coduo_springboot-app-green
-    image: ${DOCKER_REPO_NAME}/springboot-app:test-latest
+    container_name: coduo_springboot-app-${GREEN_SERVER_BINDING_PORT}
+    image: ${DOCKER_REPO_NAME}/springboot-app
     platform: linux/arm64
     ports:
-      - "${GREEN_SERVER_BINDING_PORT}:8081"
+      - "${GREEN_SERVER_BINDING_PORT}:${GREEN_SERVER_BINDING_PORT}"
     volumes:
       - ${SERVER_LOGS_PATH}/springboot-app/green:/logs
       - ${SERVER_LOGS_PATH}/springboot-app/backup/green:/logs/backup
diff --git a/backend/src/main/java/site/coduo/common/controller/CommonController.java b/backend/src/main/java/site/coduo/common/controller/CommonController.java
index bc4b16862..52babbe25 100644
--- a/backend/src/main/java/site/coduo/common/controller/CommonController.java
+++ b/backend/src/main/java/site/coduo/common/controller/CommonController.java
@@ -8,11 +8,11 @@ public class CommonController {
 
     @GetMapping("/health-check")
     public String healthCheck() {
-        return "Coduo is OK";
+        return "Coduo is OK!";
     }
 
     @GetMapping("/help")
     public String help() {
-        return "불쌍한 켈리를 살려주세요...";
+        return "히히";
     }
 }
diff --git a/backend/src/main/java/site/coduo/member/controller/docs/AuthControllerDocs.java b/backend/src/main/java/site/coduo/member/controller/docs/AuthControllerDocs.java
index e5ce6adcd..cfbe4825e 100644
--- a/backend/src/main/java/site/coduo/member/controller/docs/AuthControllerDocs.java
+++ b/backend/src/main/java/site/coduo/member/controller/docs/AuthControllerDocs.java
@@ -19,9 +19,8 @@
 @Tag(name = "인증/인가 API")
 public interface AuthControllerDocs {
 
-    @Operation(summary = "로그아웃 요청을 한다..")
-    @ApiResponse(responseCode = "200", description = "회원 정보(유저이름)을 등록한다.", content
-            = @Content(schema = @Schema(contentMediaType = MediaType.APPLICATION_JSON_VALUE)))
+    @Operation(summary = "로그아웃 요청을 한다.")
+    @ApiResponse(responseCode = "200", description = "로그아웃 요청 성공.")
     @ApiResponse(responseCode = "401", description = "인증 실패",
             content = @Content(mediaType = MediaType.APPLICATION_JSON_VALUE,
                     schema = @Schema(implementation = ApiErrorResponse.class)))
diff --git a/backend/src/main/java/site/coduo/pairroom/controller/docs/PairRoomDocs.java b/backend/src/main/java/site/coduo/pairroom/controller/docs/PairRoomDocs.java
index af71bc5e6..1e44d02ca 100644
--- a/backend/src/main/java/site/coduo/pairroom/controller/docs/PairRoomDocs.java
+++ b/backend/src/main/java/site/coduo/pairroom/controller/docs/PairRoomDocs.java
@@ -8,6 +8,7 @@
 import io.swagger.v3.oas.annotations.Operation;
 import io.swagger.v3.oas.annotations.Parameter;
 import io.swagger.v3.oas.annotations.enums.ParameterIn;
+import io.swagger.v3.oas.annotations.media.ArraySchema;
 import io.swagger.v3.oas.annotations.media.Content;
 import io.swagger.v3.oas.annotations.media.Schema;
 import io.swagger.v3.oas.annotations.responses.ApiResponse;
@@ -58,8 +59,8 @@ ResponseEntity<Void> updatePairRoomStatus(
     );
 
     @Operation(summary = "자신의 페어룸을 조회한다.")
-    @ApiResponse(responseCode = "200", description = "페어룸 조회 성공", content = @Content(mediaType = MediaType.APPLICATION_JSON_VALUE,
-            schema = @Schema(implementation = PairRoomMemberResponse.class)))
+    @ApiResponse(responseCode = "200", description = "페어룸 조회 성공", content = @Content(
+            array = @ArraySchema(schema = @Schema(implementation = PairRoomMemberResponse.class))))
     ResponseEntity<List<PairRoomMemberResponse>> getPairRooms(
             @Parameter(
                     in = ParameterIn.COOKIE,
@@ -74,7 +75,7 @@ ResponseEntity<List<PairRoomMemberResponse>> getPairRooms(
     @ApiResponse(responseCode = "200", description = "페어룸 존재 여부", content = @Content(mediaType = MediaType.APPLICATION_JSON_VALUE,
             schema = @Schema(implementation = PairRoomExistResponse.class)))
     ResponseEntity<PairRoomExistResponse> pairRoomExists(String accessCode);
-  
+
     @Operation(summary = "페어룸을 삭제한다.")
     @ApiResponse(responseCode = "204", description = "페어룸 삭제 성공")
     ResponseEntity<Void> deletePairRoom(
diff --git a/backend/src/main/java/site/coduo/todo/controller/docs/TodoDocs.java b/backend/src/main/java/site/coduo/todo/controller/docs/TodoDocs.java
index 46d1aa0e6..a68cb8d57 100644
--- a/backend/src/main/java/site/coduo/todo/controller/docs/TodoDocs.java
+++ b/backend/src/main/java/site/coduo/todo/controller/docs/TodoDocs.java
@@ -57,6 +57,7 @@ ResponseEntity<Void> updateTodoOrder(
     );
 
     @Operation(summary = "투두를 삭제한다.")
+    @ApiResponse(responseCode = "204", description = "투두 삭제 성공")
     ResponseEntity<Void> deleteTodo(
             @Parameter(description = "삭제할 투두 id")
             @PathVariable("todoId") final long todoId