Figuring out how to get Azure Key vault values into node as environment variables using K8s and docker

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Goal:

1. Azure Vault stores API_KEY
2. Define process environment variables in the *.yml file (e.g. QAT.yml) tokenizer links Azure Vault to *.yml
3. Dockerfile runs a shell script CMD [ “./docker-node-env.sh” ] which scapes through the process environment variables (handed over from k8) and builds *.env file for node with all the "REACT_APP_#" environment variables listed.

• Generating shell script
  https://medium.com/@vietgoeswest/passing-env-variables-from-the-server-to-your-create-react-app-c87578a45358

• Example k8 file
  https://github.com/NewOrbit/Experian.ExVerifier.Microservices/blob/develop/Services/Api/Deployment/EBC/QAT/QAT.yaml

• also helpful
  How to run React app inside Docker with env vars facebook/create-react-app#982

• setting up env with CRA
  https://medium.com/@tacomanator/environments-with-create-react-app-7b645312c09d

• Dockerizing a Node.js web app
  https://nodejs.org/en/docs/guides/nodejs-docker-webapp/

• Passing environment variables from Docker to Node
  https://medium.com/@felipedutratine/pass-environment-variables-from-docker-to-my-nodejs-or-golang-app-a1f2ddec31f5

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Conclusion

Docker appears to be automatically parsing it's process variables to the thing it runs via CMD.