springboot-docker-sample/Dockerfile at master · manjiii/springboot-docker-sample · GitHub

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#
# alpine jdk
#
FROM alpine:3.10.1 as build-jdk

RUN apk update && \
    apk --no-cache add openjdk11 git && \
    rm -rf /var/cache/apk/*

ENV JAVA_HOME=/usr/lib/jvm/java-11-openjdk
ENV PATH="$PATH:$JAVA_HOME/bin"

#
# Develop env for VSCode
#
FROM build-jdk as develop
ENV APP_LOGGING_LEVEL DEBUG
WORKDIR /app
EXPOSE 8080


#
# build jar
#
FROM build-jdk AS builder
USER root
COPY ./app /app
WORKDIR /app

RUN sh gradlew build

#
# alpine mini jre
#
FROM alpine:3.10.1 as build-jre

RUN apk update \
 && apk --no-cache add openjdk11    \
 && rm -rf /var/cache/apk/*

RUN /usr/lib/jvm/java-11-openjdk/bin/jlink \
     --module-path /usr/lib/jvm/java-11-openjdk/jmods \
     --compress=2 \
     --add-modules jdk.jfr,jdk.management.agent,java.base,java.logging,java.xml,jdk.unsupported,java.sql,java.naming,java.desktop,java.management,java.security.jgss,java.instrument \
     --no-header-files \
     --no-man-pages \
     --output /opt/jdk-11-mini-runtime

FROM alpine:3.10.1 as alpine-mini-jre

ENV JAVA_HOME=/opt/jdk-11-mini-runtime
ENV PATH="$PATH:$JAVA_HOME/bin"

COPY --from=build-jre /opt/jdk-11-mini-runtime /opt/jdk-11-mini-runtime


#
# build container image
#
FROM alpine-mini-jre as spring-app

ENV APP_DIR /app
# ENV APP_LOGGING_LEVEL DEBUG

COPY --from=builder /app/build/libs/spring-app.jar /app/

RUN adduser --system spring
USER spring

EXPOSE 8080

ENTRYPOINT ["java","-jar","/app/spring-app.jar"]


# docker build . --target spring-app -t spring-app
# docker run -it -p 8080:8080 --rm  spring-app