cfbdd3bfdb
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Streamlined `.drone.yml` by removing redundant test-and-jar step, introducing image caching with `cache_from`, and refining conditional triggers. Enhanced `Dockerfile` with multi-stage builds for dependency warming, test execution, and efficient package creation, alongside runtime optimizations for graceful shutdown and resource management.
51 lines
1.8 KiB
Docker
51 lines
1.8 KiB
Docker
# ---------- Base build image (pins Gradle + JDK) ----------
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FROM gradle:8.10.2-jdk21-alpine AS build-base
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WORKDIR /workspace
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# Pre-copy only files that affect dependency resolution
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COPY settings.gradle.kts settings.gradle.kts
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COPY settings.gradle settings.gradle
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COPY build.gradle.kts build.gradle.kts
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COPY build.gradle build.gradle
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COPY gradle gradle
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COPY gradlew gradlew
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# Warm Gradle wrapper & dependency cache (layer-cached in the image)
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RUN ./gradlew --version || gradle --version
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RUN ./gradlew --no-daemon --stacktrace dependencies || true
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# ---------- Test stage (fail fast but reuse the warmed deps) ----------
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FROM build-base AS test
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# Copy the full project now (invalidates later layers only when code changes)
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COPY . .
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RUN ./gradlew --no-daemon clean test
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# ---------- Package stage (reuses compiled classes incrementally) ----------
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FROM test AS package
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RUN ./gradlew --no-daemon bootJar
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# Find the built jar path
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RUN ls -lah build/libs
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# ---------- Runtime image ----------
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FROM eclipse-temurin:21-jre-alpine
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RUN addgroup -S app && adduser -S app -G app
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USER app
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WORKDIR /app
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# Copy the application jar
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COPY --from=package /workspace/build/libs/*SNAPSHOT*.jar /app/app.jar
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# Healthcheck via Spring Actuator (optional if you have it)
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# HEALTHCHECK --interval=30s --timeout=3s --start-period=20s --retries=3 \
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# CMD wget -qO- http://localhost:8080/actuator/health/liveness | grep -q '"status":"UP"' || exit 1
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# Graceful shutdown
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ENV JAVA_OPTS="-XX:+UseContainerSupport -XX:MaxRAMPercentage=75 -XX:InitialRAMPercentage=50"
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ENV SERVER_SHUTDOWN=graceful
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ENV SPRING_LIFECYCLE_TIMEOUT=20s
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LABEL com.centurylinklabs.watchtower.enable=true
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EXPOSE 8080
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ENTRYPOINT ["sh","-c","java $JAVA_OPTS -Dserver.shutdown=${SERVER_SHUTDOWN} -Dspring.lifecycle.timeout-per-shutdown-phase=${SPRING_LIFECYCLE_TIMEOUT} -jar /app/app.jar"]
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