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Why can't I access my environment variables at build time when building from a Dockerfile on App Platform?
Validated on 22 May 2023 • Last edited on 2 Jul 2024
If you are using a Dockerfile to deploy your app on App Platform, environment variables are only available at build time if you have set them using the --build-arg
option in Docker before deploying the app.
For example, to access the variable EXAMPLE=your-value
during build time, set it in the image using the docker
CLI like this:
docker build --build-arg EXAMPLE=your-value
You cannot use this method to access bindable variables at build time. If you are supplying a Dockerfile, bindable variables are only available at runtime.
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