chore(docker): reintroduce healthchecks

apps/server/src/docker_healthcheck.ts

@@ -0,0 +1,41 @@
+import http from "http";
+import config from "./services/config.js";
+
+if (config.Network.https) {
+    // built-in TLS (terminated by trilium) is not supported yet, PRs are welcome
+    // for reverse proxy terminated TLS this will works since config.https will be false
+    process.exit(0);
+}
+
+import port from "./services/port.js";
+import host from "./services/host.js";
+
+const options: http.RequestOptions = { timeout: 2000 };
+
+const callback: (res: http.IncomingMessage) => void = (res) => {
+    console.log(`STATUS: ${res.statusCode}`);
+    if (res.statusCode === 200) {
+        process.exit(0);
+    } else {
+        process.exit(1);
+    }
+};
+
+let request;
+
+if (port !== 0) {
+    // TCP socket.
+    const url = `http://${host}:${port}/api/health-check`;
+    request = http.request(url, options, callback);
+} else {
+    // Unix socket.
+    options.socketPath = host;
+    options.path = "/api/health-check";
+    request = http.request(options, callback);
+}
+
+request.on("error", (err) => {
+    console.log("ERROR");
+    process.exit(1);
+});
+request.end();