feat: add Dockerfile for eureka-server with multi-stage build and health check configuration

Author: AbaSheger

vm-deploy/eureka-server/Dockerfile

@@ -0,0 +1,30 @@
+# Build stage
+FROM amazoncorretto:17-alpine as builder
+WORKDIR /app
+COPY eureka-server.jar app.jar
+RUN apk add --no-cache binutils \
+    && jlink \
+    --add-modules java.base,java.logging,java.xml,java.sql,java.naming,java.desktop,java.security.jgss,java.instrument,jdk.unsupported \
+    --strip-debug \
+    --no-man-pages \
+    --no-header-files \
+    --compress=2 \
+    --output /javaruntime
+
+# Runtime stage
+FROM alpine:3.18
+ENV JAVA_HOME=/javaruntime
+ENV PATH="${JAVA_HOME}/bin:${PATH}"
+COPY --from=builder /javaruntime $JAVA_HOME
+COPY --from=builder /app/app.jar /app.jar
+
+# Create non-root user
+RUN addgroup -S spring && adduser -S spring -G spring
+USER spring:spring
+
+# Configure health check
+HEALTHCHECK --interval=30s --timeout=3s --start-period=30s --retries=3 \
+    CMD wget -q --spider http://localhost:8761/actuator/health || exit 1
+
+EXPOSE 8761
+ENTRYPOINT ["java", "-XX:+UseContainerSupport", "-XX:MaxRAMPercentage=75.0", "-jar", "/app.jar"]