Add settings for postgres

docker-compose.yml

@@ -9,11 +9,31 @@ services:
     restart: unless-stopped
     ports:
       - 5000:80
+# When using sqlite3 as the database
     volumes:
       - ./db/production:/usr/src/app/db/production
       - ./log:/usr/src/app/log
+# When using external logging
 #    logging:
 #      driver: $LOG_DRIVER
 #      options:
 #        syslog-address: $LOG_ADDRESS
 #        tag: $LOG_TAG
+
+
+# When using postgresql as the database
+#    links:
+#      - db
+#
+#  db:
+#    image: postgres:9.5
+#    restart: on-failure
+#    ports:
+#      - 5432:5432
+#    volumes:
+#      - database_data:/var/lib/postgresql/data
+#    environment:
+#      - PGHOST=postgres
+#      - PGDATABASE=postgres
+#      - PGUSER=postgres
+#      - PGPASSWORD=password