GHA | adding wait for postgres

Author: snyaggarwal

.github/workflows/build.yml

@@ -68,7 +68,6 @@ jobs:
           docker-images: true
           large-packages: true
           swap-storage: true
-          apt: true
 
       - uses: actions/checkout@v3
       - name: Set up Python
@@ -87,6 +86,15 @@ jobs:
           python -m venv venv
           . venv/bin/activate
           pip install --cache-dir ~/.cache/pip -r requirements.txt
+      - name: Wait for Postgres
+        run: |
+          echo "Waiting for Postgres..."
+          for i in {1..30}; do
+            pg_isready -h db -p 5432 -U postgres && echo "Postgres ready!" && exit 0
+            echo "Still waiting..."
+            sleep 2
+          done
+          echo "Postgres did not start!" && exit 1
       - name: Wait for Elasticsearch HTTP
         run: |
           echo "Waiting for Elasticsearch..."