How to use external configuration files in Docker?

1 year ago
Noah Thompson
1 minute

There are multiple ways to use external configuration files in Docker, but two common methods are listed below:

  1. –climb
  2. configuration file
  3. The configuration file located in the “app” directory.
docker run --mount type=bind,source=/path/to/config.yml,target=/app/config/config.yml <image>

In this way, the /app/config/config.yml file in the container will be synchronized with the /path/to/config.yml file on the host.

  1. configuration file
  2. File configuration
docker run -e CONFIG_FILE=/path/to/config.yml <image>

Then, in the container, the path of the configuration file can be obtained and loaded by reading the value of the environment variable CONFIG_FILE.

Regardless of the method used, it is important to ensure that the applications within the container can properly read and load configuration files.

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