FROM openjdk:17-jdk-slim AS base
WORKDIR /app
RUN apt-get update && apt install -y \
    maven \
    && apt-get clean \
    && rm -rf /var/lib/apt/lists/*

#---Development
FROM base AS development
# Switching user so it doesn't use root
# If root adds files, it takes ownership, making them unremovable on the host except by using sudo
# node tranfers ownership to the host user
ENV UID=1000
ENV GID=1000
ENV USER=dev
RUN groupadd -g ${GID} ${USER} \
    && useradd -m -u ${UID} -g ${USER} ${USER}
USER ${USER}
EXPOSE 9090
CMD ["tail","-f","/dev/null"]

#---Building
FROM base AS build
COPY . .
RUN mvn clean package -DskipTests

#--Testing
FROM build AS testing
RUN mvn clean test

#---Production
# Pulled again to get rid of maven, to decrease the size
FROM openjdk:17-jdk-slim AS production
WORKDIR /app
COPY --from=build /app/target/*.jar app.jar
EXPOSE 9090
ENTRYPOINT ["java", "-jar", "app.jar"]