Fix/dockerfile parse (#536)

* 도플러 주입 방식 변경

* fix: restore Dockerfile for buildx

Author: Chehyeon-Kim23

Dockerfile

@@ -1 +1,24 @@
-Doppler env 전체가 app 컨테이너에 들어가서
+# 1단계: Gradle로 Spring Boot JAR 빌드
+FROM gradle:8.10.0-jdk21 AS builder
+
+WORKDIR /app
+
+COPY build.gradle settings.gradle ./
+COPY gradle gradle
+COPY gradlew .
+RUN chmod +x gradlew
+
+RUN ./gradlew dependencies --no-daemon
+
+COPY src src
+RUN ./gradlew bootJar --no-daemon -x test
+
+# 2단계: 실행용 이미지
+FROM eclipse-temurin:21-jre
+WORKDIR /app
+
+COPY --from=builder /app/build/libs/*.jar app.jar
+
+EXPOSE 8080
+
+CMD ["java", "-jar", "app.jar"]