testing app checks

Signed-off-by: Peter Siegmund <developer@mars3142.org>

Dockerfile

@@ -13,7 +13,7 @@ USER app
 
 # Copy pom.xml and prefetch dependencies so a repeated build can continue from the next step with existing dependencies
 COPY --chown=app ${SERVICE_ROOT}/gradle/ ./gradle
-COPY --chown=app ${SERVICE_ROOT}/gradlew ${SERVICE_ROOT}/build.gradle ${SERVICE_ROOT}/settings.gradle ./
+COPY --chown=app ${SERVICE_ROOT}/gradlew ${SERVICE_ROOT}/build.gradle ${SERVICE_ROOT}/settings.gradle ${SERVICE_ROOT}/app.json ./
 
 # Copy all needed project files to a folder
 COPY --chown=app:app ${SERVICE_ROOT}/src ./src

app.json

@@ -0,0 +1,15 @@
+{
+  "healthchecks": {
+    "web": [
+      {
+        "type":        "readiness",
+        "name":        "web check",
+        "description": "Checking if the app responds to the /actuator/health/readiness endpoint",
+        "path":        "/actuator/health/readiness",
+        "initialDelay": 20,
+        "port": 8080,
+        "attempts": 3
+      }
+    ]
+  }
+}

src/main/resources/application.yaml

@@ -14,6 +14,12 @@ info:
     spring-cloud-version: '@spring-cloud.version@'
     spring-boot-version: '@project.parent.version@'
 
+management:
+  endpoint:
+    health:
+      probes:
+        enabled: true
+
 server:
   port: ${PORT:8080}
   shutdown: graceful