docker-compose.yaml

version: "3.8"
services:
  temp_instance:
    image: postgres:${TAG}
    environment:
      POSTGRES_USER: ${USERNAME}
      POSTGRES_PASSWORD: ${PASSWORD}
      POSTGRES_DB: ${DBNAME}
    ports:
      - ${PORT}:${PORT}
    expose:
      - ${PORT}
    container_name: ${CONTAINER_NAME}
  db_backup:
    build:
      context: .
      dockerfile: ./Dockerfile
      args:
        - TAG=${TAG}
    environment:
      CLOUD_DBHOST: ${CLOUD_DBHOST}
      CLOUD_DBPORT: ${CLOUD_DBPORT}
      CLOUD_DBUSER: ${CLOUD_DBUSER}
      CLOUD_DB_PASSWORD: ${CLOUD_DBPASSWORD}
      CLOUD_DBNAME: ${CLOUD_DBNAME}
      CLOUD_DBSCHEMA: ${CLOUD_DBSCHEMA}
      POSTGRES_PORT: ${PORT}
      POSTGRES_USER: ${USERNAME}
      POSTGRES_PASSWORD: ${PASSWORD}
      POSTGRES_DB: ${DBNAME}
    depends_on:
      - temp_instance
    container_name: db_backup