FROM ubuntu:${ubuntu.version}

# Configure standard JAVA parameters
ENV JAVA_MEMORY_INIT=128m
ENV JAVA_MEMORY_MAX=512m
ENV JAVA_OPTS=

# Install curl
RUN apt update && apt -y install curl

# Download & Install DCEVM Java
RUN mkdir -p /usr/local/lib/jvm && \
        curl -L https://github.com/TravaOpenJDK/trava-jdk-${dcevm.majorVersion}-dcevm/releases/download/dcevm-${dcevm.version}/java${dcevm.majorVersion}-openjdk-dcevm-linux.tar.gz -o /usr/local/lib/jvm/java-openjdk-dcevm.tar.gz && \
        cd /usr/local/lib/jvm && tar xzvf java-openjdk-dcevm.tar.gz && mv dcevm-${dcevm.version} java-openjdk-dcevm && rm java-openjdk-dcevm.tar.gz

# Download Hotswap Agent
RUN curl -L https://github.com/HotswapProjects/HotswapAgent/releases/download/RELEASE-${hotswap.version}/hotswap-agent-${hotswap.version}.jar -o /usr/local/lib/jvm/hotswap-agent.jar

# Add directories for dynamic injection points
RUN mkdir -p /var/lib/jvm && cd /var/lib/jvm && \
        mkdir dev lib && cd dev && \
        mkdir classes classes-extra1 classes-extra2 classes-extra3 classes-extra4 classes-extra5 classes-extra6 classes-extra7 && \
        mkdir lib lib-extra1 lib-extra2 lib-extra3 lib-extra4 lib-extra5 lib-extra6 lib-extra7

# Add our Docker container initialization script
ADD docker-entrypoint.sh /usr/local/bin

# Add our default hotswap configuration; may be overwritten
ADD hotswap-agent.properties /var/lib/jvm/lib

# Listening for Java debugger traffic
EXPOSE 8000

# Running as ROOT user for now
#USER java

# Execute the Docker container initialization script
ENTRYPOINT [ "/usr/local/bin/docker-entrypoint.sh" ]

# Do nothing meaningful; made to be overridden
CMD [ "-version" ]