feat: Dockerfile 변경 (빌드과정 포함하도록)

Dockerfile

@@ -1,10 +1,19 @@
+FROM openjdk:17 AS builder
+COPY gradlew .
+COPY gradle gradle
+COPY build.gradle .
+COPY settings.gradle .
+COPY src src
+RUN chmod +x ./gradlew
+RUN microdnf install findutils
+RUN ./gradlew build -x test
 
-FROM amazoncorretto:17-alpine-jdk
-
-WORKDIR /app
-
-COPY build/libs/*.jar app.jar
-
+# base-image
+FROM openjdk:17
+# build file path
+RUN mkdir /opt/app
+# copy jar file to container
+COPY --from=builder build/libs/*.jar /opt/app/spring-boot-application.jar
 EXPOSE 8080
-
-ENTRYPOINT ["java", "-jar", "app.jar"]
+# run jar file
+ENTRYPOINT ["java","-jar","/opt/app/spring-boot-application.jar"]