fix: use Durable Object binding for Cloudflare Containers

Containers require a class extending Container, a DO binding, and a
migration. Updated wrangler.toml with class_name, DO binding, and
migration config. Worker now exports PgConsoleContainer class.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: tianzhou

.github/workflows/deploy-demo.yml

@@ -20,8 +20,10 @@ jobs:
         id: version
         run: echo "VERSION=$(jq -r .version package.json)" >> $GITHUB_OUTPUT
 
-      - name: Update image tag in wrangler.toml
-        run: sed -i "s|pgplex/pgconsole:[^ \"]*|pgplex/pgconsole:${{ steps.version.outputs.VERSION }}|" worker/demo/wrangler.toml
+      - name: Update image tag
+        run: |
+          sed -i "s|pgplex/pgconsole:[^ \"]*|pgplex/pgconsole:${{ steps.version.outputs.VERSION }}|" worker/demo/wrangler.toml
+          sed -i "s|pgplex/pgconsole:[^ \"]*|pgplex/pgconsole:${{ steps.version.outputs.VERSION }}|" worker/demo/src/index.ts
 
       - uses: pnpm/action-setup@v4
         with:

worker/demo/src/index.ts

@@ -1,11 +1,21 @@
 import { Container } from "@cloudflare/containers";
 
 interface Env {
-  PGCONSOLE_CONTAINER: Container;
+  PGCONSOLE_CONTAINER: DurableObjectNamespace<PgConsoleContainer>;
+}
+
+export class PgConsoleContainer extends Container {
+  defaultPort = 9876;
+
+  override getContainerImage(): string {
+    return "docker.io/pgplex/pgconsole:1.1.1";
+  }
 }
 
 export default {
   async fetch(request: Request, env: Env): Promise<Response> {
-    return env.PGCONSOLE_CONTAINER.fetch(request);
+    const id = env.PGCONSOLE_CONTAINER.idFromName("default");
+    const stub = env.PGCONSOLE_CONTAINER.get(id);
+    return stub.fetch(request);
   },
 };

worker/demo/wrangler.toml

@@ -7,10 +7,18 @@ routes = [
 ]
 
 [[containers]]
-name = "PGCONSOLE_CONTAINER"
+class_name = "PgConsoleContainer"
 image = "pgplex/pgconsole:1.1.1"
 max_instances = 1
 
+[[durable_objects.bindings]]
+class_name = "PgConsoleContainer"
+name = "PGCONSOLE_CONTAINER"
+
+[[migrations]]
+tag = "v1"
+new_sqlite_classes = ["PgConsoleContainer"]
+
 [observability]
 enabled = true
 head_sampling_rate = 1