UPD: initial architecture

scripts/wait-for-database.ts

@@ -0,0 +1,17 @@
+import postgres from "postgres";
+const databaseUrl = process.env.DATABASE_URL;
+if (!databaseUrl) throw new Error("DATABASE_URL is required.");
+const client = postgres(databaseUrl, { max: 1 });
+for (let attempt = 1; attempt <= 30; attempt += 1) {
+  try {
+    await client`select 1`;
+    await client.end();
+    process.exit(0);
+  } catch {
+    if (attempt === 30) {
+      await client.end();
+      throw new Error("Database was not reachable after 30 attempts.");
+    }
+    await new Promise((resolve) => setTimeout(resolve, 1000));
+  }
+}