diff --git a/.dockerignore b/.dockerignore
new file mode 100644
index 0000000..eddf54e
--- /dev/null
+++ b/.dockerignore
@@ -0,0 +1,51 @@
+# -----------------------------
+# default
+# -----------------------------
+.git
+.gitignore
+*.log
+*.md
+.DS_Store
+*.iml
+
+# -----------------------------
+# IDE 관련
+# -----------------------------
+.idea/
+.vscode/
+*.swp
+
+# -----------------------------
+# OS/툴 관련 캐시
+# -----------------------------
+Thumbs.db
+ehthumbs.db
+desktop.ini
+
+# -----------------------------
+# Gradle 빌드 결과물 및 캐시
+# -----------------------------
+build/
+!build/libs/*.jar
+.gradle/
+!gradle/wrapper/gradle-wrapper.jar
+.gradle/
+
+# -----------------------------
+# 환경/인증 관련 (보안 목적)
+# -----------------------------
+.env
+*.pem
+*.crt
+*.key
+
+# -----------------------------
+# 테스트/커버리지
+# -----------------------------
+test-results/
+test-output/
+jacoco*.exec
+coverage/
+*.html
+*.xml
+*.json
diff --git a/.github/workflows/push-cd-dev.yml b/.github/workflows/push-cd-dev.yml
new file mode 100644
index 0000000..d812f9e
--- /dev/null
+++ b/.github/workflows/push-cd-dev.yml
@@ -0,0 +1,79 @@
+name: Spring CD for Dev Push
+
+on:
+  push:
+    branches: [ dev, main ]
+
+permissions:
+  contents: read
+
+jobs:
+  build-and-deploy:
+    name: Build Docker and Deploy to Remote Server
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+
+      - name: Set up JDK 21
+        uses: actions/setup-java@v4
+        with:
+          java-version: '21'
+          distribution: 'temurin'
+
+      - name: Grant execute permission for gradlew
+        run: chmod +x ./gradlew
+
+      - name: Build JAR
+        run: ./gradlew clean bootJar
+
+      - name: Build Docker image
+        run: |
+          docker build -t ${{ secrets.DOCKER_USERNAME }}/${{ secrets.DOCKER_REPO }}:latest .
+
+      - name: Log in to Docker Hub
+        run: echo "${{ secrets.DOCKER_PASSWORD }}" | docker login -u "${{ secrets.DOCKER_USERNAME }}" --password-stdin
+
+      - name: Push Docker image
+        run: docker push ${{ secrets.DOCKER_USERNAME }}/${{ secrets.DOCKER_REPO }}:latest
+
+      - name: Setup SSH key and config
+        run: |
+          mkdir -p ~/.ssh
+          echo "${{ secrets.SSH_PRIVATE_KEY }}" > ~/.ssh/my-key.pem
+          chmod 400 ~/.ssh/my-key.pem
+          ssh-keyscan -H ${{ secrets.SERVER_HOST }} >> ~/.ssh/known_hosts
+          echo -e "Host *\n  ServerAliveInterval 60\n  ServerAliveCountMax 3" >> ~/.ssh/config
+
+      - name: Create app directory on server
+        run: |
+          ssh -i ~/.ssh/my-key.pem ${{ secrets.SERVER_USER }}@${{ secrets.SERVER_HOST }} "mkdir -p /home/${{ secrets.SERVER_USER }}/app"
+
+      - name: Deploy and Restart Container
+        run: |
+          ssh -i ~/.ssh/my-key.pem ${{ secrets.SERVER_USER }}@${{ secrets.SERVER_HOST }} << 'EOF'
+            mkdir -p /home/${{ secrets.SERVER_USER }}/app
+            cd /home/${{ secrets.SERVER_USER }}/app
+
+            echo "${{ secrets.ENV_FILE }}" > /home/${{ secrets.SERVER_USER }}/app/.env
+
+            docker pull ${{ secrets.DOCKER_USERNAME }}/${{ secrets.DOCKER_REPO }}:latest
+            docker compose -f docker-compose-dev.yaml down
+            docker compose -f docker-compose-dev.yaml up -d
+
+            echo "✅ Docker Compose finished. Containers should be up."
+          EOF
+
+      - name: Check Docker container health
+        run: |
+          ssh -i ~/.ssh/my-key.pem ${{ secrets.SERVER_USER }}@${{ secrets.SERVER_HOST }} << 'EOF'
+            CONTAINER_ID=$(docker ps -q --filter "ancestor=${{ secrets.DOCKER_USERNAME }}/${{ secrets.DOCKER_REPO }}:latest")
+            if [ -z "$CONTAINER_ID" ]; then
+              echo "❌ ERROR: container does not run"
+              exit 1
+            fi
+
+            echo "✅ SUCCESS: container is running"
+            docker ps --filter "id=$CONTAINER_ID"
+          EOF
diff --git a/Dockerfile b/Dockerfile
new file mode 100644
index 0000000..256825c
--- /dev/null
+++ b/Dockerfile
@@ -0,0 +1,5 @@
+# Dockerfile
+FROM openjdk:21-jdk-slim
+ARG JAR_FILE=build/libs/*.jar
+COPY ${JAR_FILE} app.jar
+ENTRYPOINT ["java", "-jar", "/app.jar"]
diff --git a/docker-compose-dev.yaml b/docker-compose-dev.yaml
new file mode 100644
index 0000000..e8c0b8e
--- /dev/null
+++ b/docker-compose-dev.yaml
@@ -0,0 +1,31 @@
+version: "3.8"
+
+services:
+  spring-app:
+    image: ${DOCKER_USERNAME}/${DOCKER_REPO}:latest
+    container_name: spring-app
+    ports:
+      - "${SERVER_PORT}:${SERVER_PORT}"
+    env_file:
+      - .env
+    volumes:
+      - ./logs:/app/logs
+      - ./config:/app/config:ro
+    restart: always
+    networks:
+      - app-network
+    healthcheck:
+      test: ["CMD", "curl", "-f", "http://localhost:${SERVER_PORT}/actuator/health"]
+      interval: 30s
+      timeout: 10s
+      retries: 3
+      start_period: 30s
+    logging:
+      driver: "json-file"
+      options:
+        max-size: "10m"
+        max-file: "3"
+
+networks:
+  app-network:
+    driver: bridge
diff --git a/src/main/resources/application-sample.yml b/src/main/resources/application-sample.yml
index b7b97da..c2872d8 100644
--- a/src/main/resources/application-sample.yml
+++ b/src/main/resources/application-sample.yml
@@ -47,9 +47,9 @@ spring:
       ignore-accept-header: true
 
 jwt:
-  secret-key: ${JWT_SECRET_KEY:e4f1a5c8d2b7e9f0a6c3d1b8e5f2c7a9d4e6f3b1a2c8d5e9f0b3a7c2d1e8f5a4}
-  access-token-validity: ${JWT_ACCESS_TOKEN_VALIDITY:3600} # seconds (1 hour)
-  refresh-token-validity: ${JWT_REFRESH_TOKEN_VALIDITY:86400} # seconds (1 day)
+  secret-key: ${JWT_SECRET_KEY}
+  access-token-validity: ${JWT_ACCESS_TOKEN_VALIDITY} # seconds (1 hour)
+  refresh-token-validity: ${JWT_REFRESH_TOKEN_VALIDITY} # seconds (1 day)
 
 springdoc:
   swagger-ui:
@@ -94,7 +94,7 @@ openapi:
     default-timeout-seconds: 5
   auction-history:
     delay-ms: 1000
-    cron: "0 0 */1 * * *"  # 1시간마다 실행
+    cron: "0 0 */4 * * *"  # 1시간마다 실행
   min-price:
     cron: "0 0 */4 * * *"