fix(#198): add configurable POSTGRES_PORT to docker compose file (#199)

Author: rmayore

docker-compose.yml

@@ -19,7 +19,7 @@ services:
       - POSTGRES_PASSWORD=${POSTGRES_PASSWORD}
       - POSTGRES_HOST=${POSTGRES_HOST}
       - POSTGRES_DB=${POSTGRES_DB}
-      - POSTGRES_PORT=5432
+      - POSTGRES_PORT=${POSTGRES_PORT:-5432}
       - POSTGRES_SCHEMA=${POSTGRES_SCHEMA}
       - POSTGRES_TABLE=${POSTGRES_TABLE}
     restart: always
@@ -29,6 +29,7 @@ services:
     working_dir: /dbt/
     environment:
       - POSTGRES_HOST=${POSTGRES_HOST}
+      - POSTGRES_PORT=${POSTGRES_PORT:-5432}
       - POSTGRES_USER=${POSTGRES_USER}
       - POSTGRES_PASSWORD=${POSTGRES_PASSWORD}
       - POSTGRES_DB=${POSTGRES_DB}