Please check this example
Repo: node image with start.sh to load environment variable
https://github.com/haojiwu/node-example
In Render create a docker server to that repo.
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Add multiple line secret file. The filename (
.my-multiline-env-varin this case) needs to match the one used instart.sh
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Add docker command
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After server started, application can access the multiple-line environment variable
