Update Dockerfile

Dockerfile

@@ -1,3 +1,8 @@
+ENV POSTGRES_HOST_AUTH_METHOD=trust
+
+FROM postgres:latest
+WORKDIR /app
+
 FROM python:latest
 WORKDIR /app
 COPY requirements.txt .
@@ -6,9 +11,4 @@ RUN pip install -r requirements.txt
 FROM ubuntu:latest
 RUN apt-get -y update
 RUN apt-get -y install git
-RUN git clone https://github.com/dbt-labs/jaffle_shop.git
-
-ENV POSTGRES_HOST_AUTH_METHOD=trust
-
-FROM postgres:latest
-WORKDIR /app
+RUN git clone https://github.com/dbt-labs/jaffle_shop.git