Hithomelabs/CFTunnels#150: Add Spring Boot Actuator health check endpoints for portainer-automation

- Add spring-boot-starter-actuator dependency to portainer-automation/build.gradle
- Configure management.server.port=8082 with health,info exposure in application.properties
- Map 5005:8082 in portainer-automation/docker-compose.yaml
- Add MGMT_PORT=5005 to portainer-automation/.env.example
- EXPOSE 8081 8082 in portainer-automation Dockerfile
- No ActuatorSecurityConfig needed: service has no Spring Security/OIDC
- Management port stays LAN-only, NOT added to any tunnel ingress

portainer-automation/.env.example

@@ -36,3 +36,6 @@ ENV=dev
 
 # Host port to map to container port 8081
 HOST_PORT=8081
+
+# Host port to map to actuator management port 8082 (health checks, LAN only)
+MGMT_PORT=5005

portainer-automation/Dockerfile

@@ -9,4 +9,5 @@ RUN ./gradlew :portainer-automation:bootJar
 
 FROM openjdk:17-jdk-slim
 COPY --from=build /app/portainer-automation/build/libs/*.jar app.jar
+EXPOSE 8081 8082
 ENTRYPOINT ["java", "-jar", "/app.jar"]

portainer-automation/build.gradle

@@ -5,6 +5,7 @@ dependencies {
 
     implementation 'org.springframework.boot:spring-boot-starter-web'
     implementation 'org.springframework.boot:spring-boot-starter-validation'
+    implementation 'org.springframework.boot:spring-boot-starter-actuator'
     implementation 'org.apache.httpcomponents.client5:httpclient5'
 
     compileOnly 'org.projectlombok:lombok'

portainer-automation/docker-compose.yaml

@@ -3,7 +3,8 @@ services:
     image: gitea.hithomelabs.com/hithomelabs/portainer-automation:${ENV:-test}
     container_name: portainer-automation_${ENV:-test}
     ports:
-      - "${HOST_PORT:-8081}:8081"
+      - "${HOST_PORT:-8081}:8081"   # Application port (internal service)
+      - "${MGMT_PORT:-5005}:8082"   # Health management port (LAN only)
     environment:
       - SPRING_PROFILES_ACTIVE=${SPRING_PROFILES_ACTIVE:-local}
       - PORTAINER_API_KEY=${PORTAINER_API_KEY}

portainer-automation/src/main/resources/application.properties

@@ -3,3 +3,9 @@ portainer.base-url=https://192.168.0.100:9442
 portainer.api-key=${PORTAINER_API_KEY:}
 portainer.endpoint-id=1
 portainer.service.api-key=${PORTAINER_SERVICE_API_KEY:change-me}
+
+# Actuator configuration - management port and exposed endpoints
+# App runs on server.port=8081, so management port must differ (8082)
+management.server.port=8082
+management.endpoints.web.exposure.include=health,info
+management.endpoint.health.show-details=when-authorized