orchestration/skynet/Dockerfile

# Skynet Simplified Dockerfile
# Single build path with tests and CodeNarc

###########################################
# Builder - Complete build with all checks
###########################################
FROM gradle:8.5-jdk21 AS builder

# Set working directory
WORKDIR /workspace

# Copy Gradle wrapper and build files first (for better caching)
COPY gradlew ./
COPY gradle/ gradle/
COPY build.gradle settings.gradle ./
COPY config/ config/

# Download dependencies (this layer will be cached unless build files change)
RUN ./gradlew --no-daemon dependencies

# Copy source code
COPY src/ src/

# Build the application skipping CodeNarc checks
RUN ./gradlew --no-daemon clean build

# Copy the JAR
RUN cp build/libs/skynet.jar /workspace/skynet.jar

###########################################
# Runtime - Production runtime environment
###########################################
FROM eclipse-temurin:21-jre

# Create non-root user
RUN groupadd -r skynet && useradd -r -g skynet skynet

# Install curl for health checks
RUN apt-get update && \
    apt-get install -y --no-install-recommends curl && \
    rm -rf /var/lib/apt/lists/*

# Set working directory
WORKDIR /app

# Copy the JAR from builder stage
COPY --from=builder /workspace/skynet.jar /app/skynet.jar

# Create logs directory and set ownership
RUN mkdir -p /app/logs && chown -R skynet:skynet /app

# Switch to non-root user
USER skynet

# Expose the application port
EXPOSE 8080

# Health check endpoint
HEALTHCHECK --interval=30s --timeout=10s --start-period=60s --retries=3 \
    CMD curl -f http://localhost:8080/actuator/health || exit 1

# JVM optimization for containers (reasonable defaults)
ENV JAVA_OPTS="-XX:+UseContainerSupport -XX:MaxRAMPercentage=75.0 -XX:+UseG1GC -XX:+UseStringDeduplication"

# Only set the server port since it's needed for EXPOSE
ENV SERVER_PORT=8080

# Run the application
ENTRYPOINT ["sh", "-c", "java $JAVA_OPTS -jar /app/skynet.jar"]

# Default command (can be overridden)
CMD []