small reminder that docker compose doesn't load the env file content in the build context. you can load the env values you need like this. here I load the spark username and api token

version: "3.8"
services:
  coz_jp_web:
    container_name: coz_jp
    env_file:
      - .env
    build:
      dockerfile: Dockerfile_prod
      context: ../coz_jp
      args:
        - SPARK_USERNAME=${SPARK_USERNAME}
        - SPARK_API_TOKEN=${SPARK_API_TOKEN}