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To ensure that the environment variable HOST_ID is correctly set before your docker-compose.yml file is read on Torizon OS, you should define the variable in a way that it is available to the Docker service at startup.
One effective method is to create a systemd service override for the Docker service to export the environment variable. Here’s how you can do it:
-
Create a systemd override file for Docker:
Run the following command to create an override file:
sudo systemctl edit docker.service -
Add the environment variable to the override file:
In the editor that opens, add the following lines:
[Service] Environment="HOST_ID=your_value_here"Replace
your_value_herewith the actual value you want to set forHOST_ID. -
Reload the systemd daemon and restart Docker:
After saving and closing the editor, run the following commands to apply the changes:
sudo systemctl daemon-reload sudo systemctl restart docker
This method ensures that the HOST_ID environment variable is set in the environment of the Docker service, making it available to any containers started by docker-compose that reference this variable.
If you need the variable to be dynamic or set at runtime, consider using a script to export the variable before starting the Docker service, or modify the docker-compose.yml to use a .env file located in the same directory as the docker-compose.yml. This file should contain the line HOST_ID=your_value_here.
By following these steps, the HOST_ID variable should be correctly passed to your container when it starts.
Best regards,
Toradex AI Assistant.
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