If Compose can't resolve a substituted variable and no default value is defined, it displays a warning and substitutes the variable with an empty string.

22 дек. 2015 г. · The question is referring compose's variable substitution mechanism, which uses variables from the host, not the container. Basic string variable substitution in docker-compose files (3.8) Docker Compose default environment variable substitution Другие результаты с сайта stackoverflow.com

You can set environment variables directly in your container's environment with the environment attribute in your compose.yml. It supports both list and ... Environment variables... · Interpolation · Best practices

Interpolation can also be used to insert values into your Compose file at run time, which is then used to pass variables into your container's environment. Interpolation syntax · Ways to set variables with... · env file

31 мар. 2022 г. · You can set default values for environment variables using a .env file, which Compose automatically looks for in project directory (parent ...

14 апр. 2021 г. · Description of the issue Compose does not do recursive variable substitution in docker-compose.yaml file like bash.

9 мая 2022 г. · I get variable substitution in the 'services' section but not in the top level 'networks' section. Runing docker compose up -d I get: WARN[0000] The "PROXY_ ...

10 авг. 2022 г. · Variable substitution in your docker-compose.yml file is using your shell environment variables, whereas the env_file is used to pass ...

28 нояб. 2020 г. · docker-compose changed support for variable substitution within env-files and I had trouble tracking down when/why.

15 нояб. 2019 г. · One of the neat features of the Docker-Compose file syntax is that it allows for variable substitution, where you can put in a placeholder that will get filled ...