add dockerfile

tve-member-user/Dockerfile

+FROM openjdk:8-jre-alpine
+
+ENV SERVER_PORT 2099
+
+RUN addgroup -S spring && adduser -S spring -G spring
+USER spring:spring
+ARG JAR_FILE=build/libs/*.jar
+COPY ${JAR_FILE} app.jar
+ENTRYPOINT ["java","-jar","/app.jar"]