Stirling-PDF/docker/embedded/Dockerfile.ultra-lite

# Stirling-PDF Dockerfile - Ultra-lite version with embedded frontend
# Single JAR contains both frontend and backend with minimal dependencies

# Stage 1: Build application with embedded frontend
FROM gradle:9.3.1-jdk25 AS build

# Install Node.js and npm for frontend build
RUN --mount=type=cache,target=/var/cache/apt,sharing=locked \
    apt-get update && apt-get install -y --no-install-recommends \
    curl \
    && curl -fsSL https://deb.nodesource.com/setup_20.x | bash - \
    && apt-get install -y --no-install-recommends nodejs \
    && npm --version \
    && node --version \
    && rm -rf /var/lib/apt/lists/*

WORKDIR /app

# Copy gradle files for dependency resolution
COPY build.gradle settings.gradle gradlew ./
COPY gradle/                               gradle/
COPY app/core/build.gradle                  app/core/
COPY app/common/build.gradle                app/common/
COPY app/proprietary/build.gradle           app/proprietary/

# JDK 25+: --add-exports is no longer accepted via JAVA_TOOL_OPTIONS; use JDK_JAVA_OPTIONS instead
ENV JDK_JAVA_OPTIONS="--add-exports jdk.compiler/com.sun.tools.javac.api=ALL-UNNAMED \
  --add-exports jdk.compiler/com.sun.tools.javac.file=ALL-UNNAMED \
  --add-exports jdk.compiler/com.sun.tools.javac.parser=ALL-UNNAMED \
  --add-exports jdk.compiler/com.sun.tools.javac.tree=ALL-UNNAMED \
  --add-exports jdk.compiler/com.sun.tools.javac.util=ALL-UNNAMED"

RUN --mount=type=cache,target=/home/gradle/.gradle/caches \
    ./gradlew dependencies --no-daemon || true

# Copy entire project
COPY . .

# Build ultra-lite JAR with embedded frontend (minimal features)
RUN --mount=type=cache,target=/home/gradle/.gradle/caches \
    DISABLE_ADDITIONAL_FEATURES=true \
    ./gradlew clean build \
      -PbuildWithFrontend=true \
      -x spotlessApply -x spotlessCheck -x test -x sonarqube \
      --no-daemon

# Stage 2: Runtime image
FROM eclipse-temurin:25-jre-alpine

ENV LANG=C.UTF-8 \
    LC_ALL=C.UTF-8

ARG VERSION_TAG

# Labels
LABEL org.opencontainers.image.title="Stirling-PDF Ultra-Lite" \
      org.opencontainers.image.description="Stirling-PDF with embedded frontend - Ultra-lite version with minimal dependencies" \
      org.opencontainers.image.source="https://github.com/Stirling-Tools/Stirling-PDF" \
      org.opencontainers.image.licenses="MIT" \
      org.opencontainers.image.vendor="Stirling-Tools" \
      org.opencontainers.image.url="https://www.stirlingpdf.com" \
      org.opencontainers.image.documentation="https://docs.stirlingpdf.com" \
      maintainer="Stirling-Tools" \
      org.opencontainers.image.authors="Stirling-Tools" \
      org.opencontainers.image.version="${VERSION_TAG}" \
      org.opencontainers.image.keywords="PDF, manipulation, ultra-lite, API, Spring Boot, React"

# Environment Variables
# NOTE: Memory flags (InitialRAMPercentage, MaxRAMPercentage, MaxMetaspaceSize)
# are computed dynamically by init-without-ocr.sh based on container memory limits.
ENV VERSION_TAG=$VERSION_TAG \
    STIRLING_AOT_ENABLE="false" \
    STIRLING_JVM_PROFILE="balanced" \
    _JVM_OPTS_BALANCED="-XX:+ExitOnOutOfMemoryError -XX:+HeapDumpOnOutOfMemoryError -XX:HeapDumpPath=/configs/heap_dumps -XX:+UseG1GC -XX:MaxGCPauseMillis=200 -XX:G1HeapRegionSize=4m -XX:G1PeriodicGCInterval=60000 -XX:+UseStringDeduplication -XX:+UseCompactObjectHeaders -XX:+ExplicitGCInvokesConcurrent -Dspring.threads.virtual.enabled=true -Djava.awt.headless=true" \
    _JVM_OPTS_PERFORMANCE="-XX:+ExitOnOutOfMemoryError -XX:+HeapDumpOnOutOfMemoryError -XX:HeapDumpPath=/configs/heap_dumps -XX:+UseShenandoahGC -XX:ShenandoahGCMode=generational -XX:+UseCompactObjectHeaders -XX:+UseStringDeduplication -XX:+AlwaysPreTouch -XX:+ExplicitGCInvokesConcurrent -Dspring.threads.virtual.enabled=true -Djava.awt.headless=true" \
    JAVA_CUSTOM_OPTS="" \
    HOME=/home/stirlingpdfuser \
    PUID=1000 \
    PGID=1000 \
    UMASK=022 \
    STIRLING_TEMPFILES_DIRECTORY=/tmp/stirling-pdf \
    TMPDIR=/tmp/stirling-pdf \
    TEMP=/tmp/stirling-pdf \
    TMP=/tmp/stirling-pdf \
    ENDPOINTS_GROUPS_TO_REMOVE=CLI

# Install minimal dependencies
RUN echo "@main https://dl-cdn.alpinelinux.org/alpine/edge/main" | tee -a /etc/apk/repositories && \
    echo "@community https://dl-cdn.alpinelinux.org/alpine/edge/community" | tee -a /etc/apk/repositories && \
    echo "@testing https://dl-cdn.alpinelinux.org/alpine/edge/testing" | tee -a /etc/apk/repositories && \
    apk upgrade --no-cache -a && \
    apk add --no-cache \
    ca-certificates \
    tzdata \
    tini \
    bash \
    curl \
    shadow \
    su-exec && \
    mkdir -p $HOME /configs /logs /customFiles /pipeline/watchedFolders /pipeline/finishedFolders /tmp/stirling-pdf /tmp/stirling-pdf/heap_dumps && \
    mkdir -p /usr/share/fonts/opentype/noto && \
    # User permissions
    addgroup -S stirlingpdfgroup && adduser -S stirlingpdfuser -G stirlingpdfgroup && \
    chown -R stirlingpdfuser:stirlingpdfgroup $HOME /configs /customFiles /pipeline /tmp/stirling-pdf

# Copy scripts and built artifacts after OS package layer to maximize cache reuse.
COPY --chown=1000:1000 scripts/init-without-ocr.sh /scripts/init-without-ocr.sh
COPY --chown=1000:1000 scripts/installFonts.sh /scripts/installFonts.sh
COPY --chown=1000:1000 scripts/stirling-diagnostics.sh /scripts/stirling-diagnostics.sh

# Copy built JARs from build stage
COPY --from=build --chown=1000:1000 \
     /app/app/core/build/libs/*.jar /app.jar
COPY --from=build --chown=1000:1000 \
     /app/build/libs/restart-helper.jar /restart-helper.jar

RUN chmod +x /scripts/*.sh

EXPOSE 8080/tcp

# Set user and run command
ENTRYPOINT ["tini", "--", "/scripts/init-without-ocr.sh"]
CMD []