chore(CI/CD) : Amazon Corretto JDK 21 기반 Docker 배포 파이프라인 구성(staging)

Dockerfile-staging

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+# Base image with Amazon Corretto JDK 21
+FROM amazoncorretto:21
+
+# Set working directory
+WORKDIR /app
+
+# Copy JAR file to the container
+COPY build/libs/noostak-0.0.1-SNAPSHOT.jar /app/noostak.jar
+
+# Set environment variables for timezone and Spring profile
+ENV TZ=Asia/Seoul
+ENV SPRING_PROFILES_ACTIVE=staging
+
+# Expose default Spring Boot port
+EXPOSE 8080
+
+# Run the application
+CMD ["java", "-Duser.timezone=$TZ", "-jar", "-Dspring.profiles.active=$SPRING_PROFILES_ACTIVE", "noostak.jar"]