FROM git.luke-else.co.uk/luke-else/lab:latest

RUN apk add --no-cache unzip zip openjdk21

# Set Java environment variables
ENV JAVA_HOME=/usr/lib/jvm/java-21-openjdk
ENV PATH="$JAVA_HOME/bin:$PATH"

# Install SDKMAN and use it to install Kotlin and Gradle
RUN curl -s "https://get.sdkman.io" | bash && \
    bash -c "source $HOME/.sdkman/bin/sdkman-init.sh && \
             sdk install kotlin && \
             sdk install gradle"

# Make SDKMAN tools available in PATH
ENV SDKMAN_DIR="/root/.sdkman"
ENV PATH="$SDKMAN_DIR/candidates/kotlin/current/bin:$SDKMAN_DIR/candidates/gradle/current/bin:$PATH"