ci: add healthcheck script

Signed-off-by: rare-magma <rare-magma@posteo.eu>

Dockerfile

@@ -61,6 +61,8 @@ RUN apt update && apt install -y \
 
 COPY --from=builder /ghostfolio/dist/apps /ghostfolio/apps
 COPY ./docker/entrypoint.sh /ghostfolio/entrypoint.sh
+COPY ./docker/healthcheck.js /ghostfolio/healthcheck.js
 WORKDIR /ghostfolio/apps/api
 EXPOSE ${PORT:-3333}
 CMD [ "/ghostfolio/entrypoint.sh" ]
+HEALTHCHECK --interval=15s --timeout=5s --start-period=2s --retries=3 CMD [ "node", "/ghostfolio/healthcheck.js" ]

docker/healthcheck.js

@@ -0,0 +1,25 @@
+import { request } from "node:http";
+
+const options = {
+    host : "localhost",
+    path: "/api/v1/health",
+    port : "3333",
+    timeout : 2000
+};
+
+const healthCheck = request(options, (res) => {
+    if (res.statusCode === 200) {
+        process.exit(0);
+    }
+    else {
+        console.error(res.statusMessage)
+        process.exit(1);
+    }
+});
+
+healthCheck.on('error', (err) => {
+    console.error(err);
+    process.exit(1);
+});
+
+healthCheck.end();