FROM openjdk:8-jre-alpine
ARG JAR_FILE=target/springboot-docker-demo-1.0.jar
ADD ${JAR_FILE} app.jar
ENV JAVA_OPTS=""
# ENTRYPOINT ["java","${JAVA_OPTS}","-jar","/app.jar"]
ENTRYPOINT java ${JAVA_OPTS} -jar /app.jar


docker run --name sbhello    -p 8088:8088   -e JAVA_OPTS="-Xms256m -Xmx512m" sbhello:v1


 springboot应用打docker镜像