Add a container health check

See #38.

Author: iay

Dockerfile

@@ -59,3 +59,5 @@ COPY --from=builder application/application/ ./
 EXPOSE 8080
 
 ENTRYPOINT ["java", "org.springframework.boot.loader.JarLauncher"]
+
+HEALTHCHECK CMD ["/usr/bin/curl", "--silent", "http://localhost:8080/actuator/health"]

pom.xml

@@ -136,6 +136,11 @@
             <artifactId>spring-boot-starter-web</artifactId>
             <scope>runtime</scope>
         </dependency>
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-actuator</artifactId>
+            <scope>runtime</scope>
+        </dependency>
         <dependency>
             <groupId>org.springframework.boot</groupId>
             <artifactId>spring-boot-starter-tomcat</artifactId>

src/main/resources/application.properties

@@ -8,3 +8,9 @@ validator.common = common-beans.xml
 # Space-separated list of the validator configurations to load.
 validator.configurations = default-validator.xml \
     empty-validator.xml test/validator.xml
+
+# Only expose the spring-boot-actuator health endpoint.
+management.endpoints.enabled-by-default=false
+management.endpoint.health.enabled=true
+# Disable the disk space health indicator
+management.health.diskspace.enabled=false