# Stage that builds the application, a prerequisite for the running stage FROM eclipse-temurin:21-jdk-jammy as build ARG SERVICE_ROOT RUN apt-get update -qq # Stop running as root at this point RUN useradd -m app WORKDIR /usr/src/app/ RUN chown app:app /usr/src/app/ USER app # Copy pom.xml and prefetch dependencies so a repeated build can continue from the next step with existing dependencies COPY --chown=app ${SERVICE_ROOT}/.mvn/ .mvn COPY --chown=app ${SERVICE_ROOT}/mvnw ${SERVICE_ROOT}/pom.xml ./ # Copy all needed project files to a folder COPY --chown=app:app ${SERVICE_ROOT}/src ./src # Build the production package RUN ./mvnw --batch-mode clean verify -DskipTests # Running stage: the part that is used for running the application FROM eclipse-temurin:21-jre-jammy RUN useradd -m app USER app COPY --chown=app --from=build /usr/src/app/target/*.jar /usr/app/app.jar EXPOSE 8080 CMD java -jar /usr/app/app.jar