Refine deployment

Dockerfile

@@ -1,9 +1,5 @@
-FROM eclipse-temurin:21-jdk-alpine AS builder
-WORKDIR /app
-COPY . /app
-RUN ./gradlew jar --no-daemon
-
 FROM eclipse-temurin:21-alpine
-COPY --from=builder /app/build/libs/pcinv-0.0.1-SNAPSHOT.jar ./
-ENTRYPOINT ["java", "-jar", "pcinv-0.0.1-SNAPSHOT.jar"]
+WORKDIR /app
+ADD ./build/libs/pcinv-0.0.1-SNAPSHOT.jar /app/pcinv.jar
+ENTRYPOINT ["java", "-jar", "pcinv.jar"]
 EXPOSE 8088/tcp