chore: fix docker compose test (risingwavelabs#8666)

Signed-off-by: tabVersion <[email protected]>

Author: tabVersion

.github/workflows/intergration_tests.yml

@@ -4,6 +4,9 @@ on:
   schedule:
   # Currently we build docker images at 12:00 (UTC), so run this at 13:00
   - cron: '0 13 * * *'
+push:
+    branches: [main]
+    paths: [integration_tests/**]
 
 jobs:
   golangci:

integration_tests/postgres-sink/postgres_prepare.sql

@@ -1,4 +1,4 @@
 CREATE TABLE target_count (
-  target_id VARCHAR(128),
+  target_id VARCHAR(128) primary key,
   target_count BIGINT
 );