Dockerfile.template

# syntax=docker/dockerfile:1
# Kiket Extension Dockerfile Template - Java SDK
# This template is used by Cloud Build to generate Dockerfiles for extensions
# that declare `sdk: java` in their manifest.

# Build stage
FROM eclipse-temurin:21-jdk-jammy AS builder

WORKDIR /app

# Install build dependencies
RUN apt-get update -qq && \
    apt-get install -y --no-install-recommends git curl && \
    rm -rf /var/lib/apt/lists/*

# Copy dependency files first for better caching
COPY pom.xml ./

# Download dependencies (uses Maven wrapper if present, otherwise install maven)
RUN if [ -f mvnw ]; then chmod +x mvnw; fi
COPY . .
RUN if [ -f mvnw ]; then \
      ./mvnw dependency:go-offline -B; \
    else \
      apt-get update -qq && apt-get install -y --no-install-recommends maven && \
      mvn dependency:go-offline -B; \
    fi

# Build the application
RUN if [ -f mvnw ]; then \
      ./mvnw package -DskipTests -B; \
    else \
      mvn package -DskipTests -B; \
    fi

# Runtime stage
FROM eclipse-temurin:21-jre-jammy

WORKDIR /app

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

# Copy built JAR from builder stage
COPY --from=builder /app/target/*.jar app.jar

# Create non-root user for security
RUN useradd -m -s /bin/bash kiket && \
    chown -R kiket:kiket /app

USER kiket

# Port configured via deployments.yml, default 9292
ENV PORT=${PORT}
EXPOSE ${PORT}

# Health check endpoint
HEALTHCHECK --interval=30s --timeout=5s --start-period=10s --retries=3 \
  CMD curl -f http://localhost:${PORT}/health || exit 1

# SDK handles server via run()
CMD ["java", "-jar", "app.jar"]