Adding environment variables

database/Dockerfile

@@ -1,9 +1,12 @@
 FROM postgres:latest
 
+ENV POSTGRES_DB=big-brother
+ENV POSTGRES_PASSWORD=postgres
+
 COPY init_db.py /docker-entrypoint-initdb.d/
 
 RUN apt-get update && \
     apt-get install -y python3 && \
     apt install python3-psycopg2
 
-EXPOSE 5432
+EXPOSE 5432