Setting the SMTP_PASSWORD with docker compose secrets

[Weizenritter]

Hey there. Since I like checking in all my configs I like them to be free of secrets in clear text. I wonder if it's possible to provide the value of the variable SMTP_PASSWORD with an docker compose secret. Here an example of what I would imagine:

---
services:
  mealie:
    image: ghcr.io/mealie-recipes/mealie:v1.3.2
    container_name: mealie
    ports:
      - "9925:9000"
    volumes:
      - ./mealie_data:/etc/mealie/data
    environment:
      - TZ=Europe/Berlin
      - BASE_URL=https://mealie.example.com
      - SMTP_AUTH_STRATEGY=TLS
      - [email protected]
      - SMTP_HOST=smtp.example.com
      - SMTP_PASSWORD_FILE=/run/secrets/smtp_password  # <-- Look here
      - SMTP_PORT=587
      - [email protected]
    secrets:
      - source: smtp_password
secrets:
  smtp_password:
    name: my_smtp_password
    file: /path/to/smtp_password

Note the _FILE suffix, it's a convention that some official images implement, as stated in the documentation of docker compose (scroll to the bottom for the note).

If it's possible in some other way I'd like to here how, thanks in advance!

[aljora]

https://docs.pydantic.dev/latest/concepts/pydantic_settings/#use-case-docker-secrets

I'm going to try adding this setting and go through an Issue and PR.

[ekcom]

Done in #3606