How can I get environment variables of docker in node js?

Question

I am using docker to run node server.js
In terminal, I execute docker run --env-file .env -p 8080:8080 -d node-web-app and I am trying to use process.env in server.js to get environment variables in docker
However, RangeError: Invalid status code: 0 occurs.
How can I fix it and get the environment variables in docker?
Thanks in advance.

check if the variable is correctly set in docker container! use this to connecto to bash and then check for variable. — Mohsen ZareZardeyni
– Mohsen ZareZardeyni, Commented Nov 26, 2016 at 21:17

Jason Livesay · Accepted Answer · 2016-11-26 22:23:26Z

1

That error is related to your HTTP handler, not env variables. Make sure you send a valid response.

 res.send('OK')
 res.send(JSON.stringify(process.env));


docker run -e "test=1" -e "testb=2"

answered Nov 26, 2016 at 22:23

Jason Livesay

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