Quotes automatically removed from docker-compose.prod.yml file, causing port issue

[microhobby]

This was reported at https://community.toradex.com/t/quotes-automatically-removed-from-docker-compose-prod-yml-file-causing-port-issue/21677

I am using the .🔨-create-production-image script to build my application container and generate the docker-compose.prod.yml file. However, it seems to me that the quotes (or double-quotes) surrounding the values are removed and do not appear in the generated docker-compose.prod.yml.

This is especially annoying for the “ports” definition. Here is a quote from the compose file reference page:

When mapping ports in the HOST:CONTAINER format, you may experience erroneous results when using a container port lower than 60, because YAML parses numbers in the format xx:yy as a base-60 value. For this reason, we recommend always explicitly specifying your port mappings as strings.

So here is an example. I have a container which needs the port 21 to be exposed:

ftp_server:
    image: zhabba/pure-ftpd-arm64
    container_name: ftp_admin
    ports:
      - "21:21"
      - "30000-30009:30000-30009"

Once the .🔨-create-production-image script has been executed, the docker-compose.prod.yml file looks like this:

ftp_server:
    image: zhabba/pure-ftpd-arm64
    container_name: ftp_admin
    ports:
      - 21:21
      - 30000-30009:30000-30009

Finally, when running this on my board, I cannot access the FTP server.