fix: add python-dotenv so .env works without export or sourcing

.env.example

@@ -8,9 +8,9 @@
 #   echo "POSTGRES_URL=$(az keyvault secret show --vault-name kv-hyf-data --name postgres-url --query value -o tsv)" >> .env
 #   echo "AZURE_STORAGE_CONNECTION_STRING=$(az keyvault secret show --vault-name kv-hyf-data --name storage-connection-string --query value -o tsv)" >> .env
 
-POSTGRES_URL=postgresql://<user>:<password>@<server>.postgres.database.azure.com:5432/<db>?sslmode=require
-AZURE_STORAGE_CONNECTION_STRING=DefaultEndpointsProtocol=https;AccountName=...;AccountKey=...;EndpointSuffix=core.windows.net
+export POSTGRES_URL=postgresql://<user>:<password>@<server>.postgres.database.azure.com:5432/<db>?sslmode=require
+export AZURE_STORAGE_CONNECTION_STRING=DefaultEndpointsProtocol=https;AccountName=...;AccountKey=...;EndpointSuffix=core.windows.net
 # Your personal schema on the shared Postgres server — replace with your GitHub handle.
 # All tables are created here so they don't collide with other students.
-DB_SCHEMA=dev_<your_github_handle>
-LOG_LEVEL=INFO
+export DB_SCHEMA=dev_<your_github_handle>
+export LOG_LEVEL=INFO

README.md

@@ -42,15 +42,15 @@ uv run pytest tests/ -v
 
 ```bash
 # Build for linux/amd64 (required by Azure Container Apps) and push to ACR
-docker build --platform linux/amd64 -t hyfregistry.azurecr.io/my-pipeline:1.0 .
-docker push hyfregistry.azurecr.io/my-pipeline:1.0
+docker build --platform linux/amd64 -t hyfregistry.azurecr.io/my-pipeline:latest .
+docker push hyfregistry.azurecr.io/my-pipeline:latest
 
 # Create Container App Job (runs daily at 06:00 UTC)
 az containerapp job create \
   --name my-pipeline-job \
   --resource-group rg-hyf-data \
   --environment env-hyf-data \
-  --image hyfregistry.azurecr.io/my-pipeline:1.0 \
+  --image hyfregistry.azurecr.io/my-pipeline:latest \
   --registry-server hyfregistry.azurecr.io \
   --trigger-type Schedule \
   --cron-expression "0 6 * * *" \

pyproject.toml

@@ -8,6 +8,7 @@ dependencies = [
     "azure-storage-blob==12.25.1",
     "requests==2.32.3",
     "pandas==2.2.3",
+    "python-dotenv>=1.0",
 ]
 
 [dependency-groups]

src/pipeline.py

@@ -4,6 +4,10 @@
 import os
 import sys
 
+from dotenv import load_dotenv
+
+load_dotenv()
+
 import pandas as pd
 from pydantic import ValidationError