61 lines
1.8 KiB
Docker
61 lines
1.8 KiB
Docker
# syntax=docker/dockerfile:1
|
|
|
|
# Build stage: compile the ping-service JAR inside Docker
|
|
FROM gradle:8.14-jdk21-alpine AS builder
|
|
WORKDIR /workspace
|
|
|
|
# Enable Gradle build cache and daemon for faster builds
|
|
ENV GRADLE_OPTS="-Dorg.gradle.caching=true -Dorg.gradle.daemon=false"
|
|
|
|
# Copy gradle files first for better layer caching
|
|
COPY gradle/ gradle/
|
|
COPY gradlew gradlew.bat gradle.properties settings.gradle.kts ./
|
|
COPY build.gradle.kts ./
|
|
COPY platform/ platform/
|
|
|
|
# Copy only necessary source files for the ping-service and its dependencies
|
|
COPY temp/ping-service/ temp/ping-service/
|
|
|
|
# Download dependencies first (better caching)
|
|
RUN gradle :temp:ping-service:dependencies --no-daemon
|
|
|
|
# Build only the ping-service artifact
|
|
RUN gradle :temp:ping-service:bootJar --no-daemon
|
|
|
|
# Runtime stage: slim JRE image to run the service
|
|
FROM eclipse-temurin:21-jre-alpine
|
|
|
|
# Set working directory
|
|
WORKDIR /app
|
|
|
|
# Install curl for health checks (small footprint on Alpine)
|
|
RUN apk add --no-cache curl
|
|
|
|
# Create a non-root user for better security
|
|
RUN addgroup -S app && adduser -S app -G app
|
|
|
|
# Copy the built JAR from the builder stage
|
|
COPY --from=builder --chown=app:app /workspace/temp/ping-service/build/libs/*.jar app.jar
|
|
|
|
# Switch to non-root user
|
|
USER app
|
|
|
|
# Expose application port
|
|
EXPOSE 8082
|
|
|
|
# Health check against the actuator health endpoint
|
|
HEALTHCHECK --interval=30s --timeout=5s --start-period=30s --retries=3 \
|
|
CMD curl -fsS http://localhost:8082/actuator/health || exit 1
|
|
|
|
# Enhanced JVM options for containerized Spring Boot applications
|
|
ENV JAVA_OPTS="-XX:MaxRAMPercentage=75.0 \
|
|
-XX:+UseStringDeduplication \
|
|
-XX:+UseG1GC \
|
|
-XX:+UseContainerSupport \
|
|
-XX:+OptimizeStringConcat \
|
|
-Djava.security.egd=file:/dev/./urandom \
|
|
-Dspring.jmx.enabled=false"
|
|
|
|
# Run the application
|
|
ENTRYPOINT ["sh", "-c", "exec java $JAVA_OPTS -jar app.jar"]
|