add healthcheck.

Dockerfile

@@ -110,6 +110,11 @@ ENV NEKO_SERVER_BIND=:8080
 # copy executabe from previous stage
 COPY --from=build /src/bin/neko /usr/bin/neko
 
+#
+# add healthcheck
+HEALTHCHECK --interval=10s --timeout=5s --retries=8 \
+    CMD wget -O - http://localhost:${NEKO_SERVER_BIND#*:}/api/health || exit 1
+
 #
 # run neko
 CMD ["/usr/bin/supervisord", "-c", "/etc/neko/supervisord.conf"]

internal/api/router.go

@@ -58,6 +58,11 @@ func (api *ApiManagerCtx) Route(r chi.Router) {
 			r.Route(path, router)
 		}
 	})
+
+	r.Get("/health", func(w http.ResponseWriter, r *http.Request) {
+		//nolint
+		w.Write([]byte("true"))
+	})
 }
 
 func (api *ApiManagerCtx) Authenticate(next http.Handler) http.Handler {

internal/http/logger.go

@@ -13,6 +13,12 @@ func Logger(next http.Handler) http.Handler {
 	fn := func(w http.ResponseWriter, r *http.Request) {
 		req := map[string]interface{}{}
 
+		// exclude healthcheck from logs
+		if r.RequestURI == "/api/health" {
+			next.ServeHTTP(w, r)
+			return
+		}
+
 		if reqID := middleware.GetReqID(r.Context()); reqID != "" {
 			req["id"] = reqID
 		}