Set POSTGRES_HOSTNAME in workflow

Author: andrewpillar

.github/workflows/test.yml

@@ -23,6 +23,7 @@ jobs:
         image: postgres
 
         env:
+          POSTGRES_HOSTNAME: postgres
           POSTGRES_DB: mgrt
           POSTGRES_USER: mgrt
           POSTGRES_PASSWORD: secret
@@ -33,9 +34,6 @@ jobs:
           --health-timeout 5s
           --health-retries 5
 
-        ports:
-        - 5432:5432
-
     steps:
     - uses: actions/checkout@v6
     - uses: actions/setup-go@v6