[MongoDB] Fixes local Docker setup and load_data script (#13)

* Update docker compose and use connection string

* correct os env name

* Add env connection string to docker compose

mongodb/dev/load_data.py

@@ -11,13 +11,12 @@
 
 load_dotenv()
 
-client = pymongo.MongoClient(
-    host=os.environ.get("MONGODB_HOST", "mongo"),
-    port=os.environ.get("MONGODB_PORT", 27017),
-    username=os.environ.get("MONGODB_ROOT_USERNAME", "root"),
-    password=os.environ.get("MONGODB_ROOT_PASSWORD", "example"),
+connection_string = os.environ.get(
+    "MONGODB_CONNECTION_STRING", "mongodb://root:example@mongo:27017"
 )
 
+client = pymongo.MongoClient(connection_string)
+
 fields = []
 
 db = client.bbq

mongodb/docker-compose.yml

@@ -1,9 +1,9 @@
-version: "1"
+version: "3.8"
 services:
   mongo:
     image: mongo:latest
     container_name: mongo
-    restart: unless-stopped
+    restart: always
     ports:
       - 27017:27017
     environment:
@@ -18,6 +18,8 @@ services:
     container_name: data-loader
     depends_on:
       - mongo
+    environment:
+      MONGODB_CONNECTION_STRING: mongodb://root:example@mongo:27017
     volumes:
       - ./dev/bbq.csv:/bbq.csv
       - ./dev/load_data.py:/load_data.py