Add docker support

docker-compose.yml

@@ -0,0 +1,13 @@
+version: '2'
+
+services:
+  executor:
+    image: com.devsoap/dbt-executor
+    container_name: dbt-executor
+    environment:
+    - dbt.ledger.url=http://ledger:5050
+  ledger:
+    image: com.devsoap/dbt-ledger
+    container_name: dbt-ledger
+    environment:
+    - dbt.executor.url=http://executor:5050