feat:linebot

1. change Dockerfile
2. change the way import

app/config.py

@@ -0,0 +1,21 @@
+import os
+from dotenv import load_dotenv
+
+load_dotenv()
+
+# LINE
+LINE_CHANNEL_ACCESS_TOKEN = os.getenv("LINE_CHANNEL_ACCESS_TOKEN")
+LINE_CHANNEL_SECRET = os.getenv("LINE_CHANNEL_SECRET")
+LINE_USER_ID = os.getenv("LINE_USER_ID")
+
+# DB
+DATABASE_URL = os.getenv("DATABASE_URL")
+
+# 發票
+EINVOICE_USER = os.getenv("EINVOICE_USER")
+EINVOICE_PASS = os.getenv("EINVOICE_PASS")
+
+# Cloudinary
+CLOUDINARY_CLOUD_NAME = os.getenv("CLOUDINARY_CLOUD_NAME")
+CLOUDINARY_API_KEY = os.getenv("CLOUDINARY_API_KEY")
+CLOUDINARY_API_SECRET = os.getenv("CLOUDINARY_API_SECRET")