42 lines
1.2 KiB
Docker
42 lines
1.2 KiB
Docker
# syntax=docker/dockerfile:1
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# Build stage: compile the ping-service JAR inside Docker
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FROM gradle:8.7-jdk17-alpine AS builder
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WORKDIR /workspace
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# Copy the entire repository (simplest and most robust for multi-module setups)
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# This allows building the ping-service even if it depends on shared build files or platforms.
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COPY . .
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# Build only the ping-service artifact
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RUN gradle :temp:ping-service:bootJar --no-daemon
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# Runtime stage: slim JRE image to run the service
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FROM eclipse-temurin:17-jre-alpine
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# Set working directory
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WORKDIR /app
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# Install curl for health checks (small footprint on Alpine)
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RUN apk add --no-cache curl
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# Create a non-root user for better security
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RUN addgroup -S app && adduser -S app -G app
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USER app
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# Copy the built JAR from the builder stage
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COPY --from=builder /workspace/temp/ping-service/build/libs/*.jar app.jar
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# Expose application port
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EXPOSE 8082
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# Health check against the ping endpoint
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HEALTHCHECK --interval=30s --timeout=5s --start-period=20s --retries=3 \
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CMD curl -fsS http://localhost:8082/ping || exit 1
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# JVM options can be overridden at runtime via JAVA_OPTS env
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ENV JAVA_OPTS="-XX:MaxRAMPercentage=75.0 -XX:+UseStringDeduplication"
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# Run the application
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ENTRYPOINT ["sh", "-c", "exec java $JAVA_OPTS -jar app.jar"]
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