added docker file

Dockerfile

@@ -1,7 +1,7 @@
 FROM python:3.9-slim
 WORKDIR /app
 COPY requirements.txt ./requirements.txt
-RUN apt-get update \ && apt-get -y install libpq-dev gcc \ && pip install psycopg2
+RUN apt-get update && apt-get -y install libpq-dev gcc && pip install psycopg2
 RUN pip install uvicorn
 RUN pip install -r requirements.txt
 COPY . /app