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Last active May 10, 2023 13:21
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Layered Production-ready Dockerfile for Spring Boot Applications
Raw
Dockerfile
# Making here use of a docker multi-stage build
# https://docs.docker.com/build/building/multi-stage/
# Build-time container
FROM azul/zulu-openjdk-alpine:17.0.7 as builder
ARG JAR_FILE
WORKDIR application
COPY $JAR_FILE application.jar
COPY build_application.sh ./
RUN sh build_application.sh
# Run-time container
FROM alpine:3.17.2
ARG APP_NAME=app
ARG USER=exie
ARG GROUP=party
ARG LOG_FOLDER=/srv/app/logs
ENV APP=$APP_NAME \
JAVA_HOME=/opt/java \
PATH="${JAVA_HOME}/bin:${PATH}"
## Adding programs for operation
COPY packages.list /tmp
RUN xargs -r apk -v --update-cache add < /tmp/packages.list && \
rm -rf /var/cache/apk/* && \
rm /tmp/packages.list
WORKDIR /srv/$APP
COPY run_application.sh /etc
RUN addgroup -S $GROUP && \
adduser -S -D -H $USER -G $GROUP && \
mkdir -p $LOG_FOLDER && \
chgrp $GROUP $LOG_FOLDER && \
chmod g+rwx $LOG_FOLDER && \
chmod +x /etc/run_application.sh
## Application-specif created JRE
COPY --from=builder /opt/java-runtime $JAVA_HOME
## Spring Boot Layers
COPY --from=builder application/spring-boot-loader/ ./
COPY --from=builder application/dependencies/ ./
COPY --from=builder application/snapshot-dependencies/ ./
COPY --from=builder application/application/ ./
USER $USER
ENTRYPOINT ["/usr/bin/dumb-init", "--"]
CMD ["/etc/run_application.sh"]
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