# Stage 1: Cache Gradle dependencies
FROM gradle:9.1.0-jdk21 AS build
RUN mkdir -p /home/gradle/cache_home
ENV GRADLE_USER_HOME=/home/gradle/cache_home
COPY build.gradle.* gradle.properties /home/gradle/app/
COPY gradle /home/gradle/app/gradle
WORKDIR /home/gradle/app
RUN gradle dependencies --no-daemon

COPY --chown=gradle:gradle . /home/gradle/src
WORKDIR /home/gradle/src
# and boot JAR by default.
RUN gradle buildFatJar --no-daemon

# Stage 2: Create the Runtime Image
FROM amazoncorretto:21 AS runtime
EXPOSE 8080
RUN mkdir /app
COPY --from=build /home/gradle/src/build/libs/*.jar /app/ktor-docker-sample.jar
ENTRYPOINT ["java","-jar","/app/ktor-docker-sample.jar"]