Java Gradle example Dockerfile for Spring Boot

FROM gradle:jdk20 as builder

WORKDIR /app


ADD *.gradle gradle.* gradlew ./

RUN --mount=type=cache,target=/root/.gradle \
gradle --no-daemon build || true


ADD ./src ./src

RUN --mount=type=cache,target=/root/.gradle \
gradle --no-daemon bootJar


# ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~


FROM openjdk:19

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

CMD java -jar /app.jar