fix: optimize dockerfile to use external gradle build

dap-tool-sms/Dockerfile

@@ -1,19 +1,8 @@
-FROM eclipse-temurin:21-jdk-alpine AS builder
-WORKDIR /app
-COPY gradlew .
-COPY gradle gradle
-COPY build.gradle settings.gradle ./
-
-COPY dap-tool-core dap-tool-core
-COPY dap-tool-sms dap-tool-sms
-RUN chmod +x gradlew
-RUN ./gradlew clean :dap-tool-sms:build -x test
-
 FROM eclipse-temurin:21-jre-alpine
 WORKDIR /app
 RUN apk add --no-cache tzdata
 ENV TZ=Asia/Seoul
-COPY --from=builder /app/dap-tool-sms/build/libs/*-SNAPSHOT.jar app.jar
+COPY dap-tool-sms/build/libs/*-SNAPSHOT.jar app.jar
 EXPOSE 8082
 ENTRYPOINT ["java", "-jar", "app.jar"]