feat: add health check endpoint

Dockerfile

@@ -27,4 +27,6 @@ ENV GENESIS_BUILD_VERSION=${GENESIS_BUILD_VERSION}
 ENV GENESIS_BUILD_DATE=${GENESIS_BUILD_DATE}
 ENV GENESIS_BUILD_COMMIT=${GENESIS_BUILD_COMMIT}
 
+HEALTHCHECK CMD wget --no-verbose --tries=1 --spider http://localhost:8080/health || exit 1
+
 CMD ["./genesis"]

routes/health.go

@@ -0,0 +1,12 @@
+package routes
+
+import (
+	"github.com/gin-gonic/gin"
+	"net/http"
+)
+
+func Health(c *gin.Context) {
+
+	// We assume, if the api is able to respond to this request, it is healthy.
+	c.Status(http.StatusOK)
+}

routes/setup.go

@@ -34,5 +34,8 @@ func SetupRoutes() *gin.Engine {
 	router.GET("/data/:key", DataByKey)
 	router.GET("/data", Data)
 
+	// Heal check endpoints
+	router.GET("/health", Health)
+
 	return router
 }