<![CDATA[Reading env variables with custom app]]>I am trying to install a custom app written in Phoenix Elixir.

My dockerfile ends with that:

ADD start.sh /app/start.sh
RUN chmod +x /app/start.sh
CMD [ "/app/start.sh" ]

Earlier, I set my environment variables like that:

ENV SECRET_KEY_BASE=default

Here is my startup script:

#!/bin/bash

set -eu

# Load environment variables
source ./env.list

# Start PROGRAM
exec ./_build/prod/rel/PROGRAM/bin/PROGRAM start

But the environment variables don't seem to be read properly, so the app doesn't start in Cloudron. What am I doing wrong?

]]>https://forum.cloudron.io/topic/11161/reading-env-variables-with-custom-appRSS for NodeWed, 15 Apr 2026 13:03:42 GMTThu, 22 Feb 2024 18:39:56 GMT60<![CDATA[Reply to Reading env variables with custom app on Fri, 23 Feb 2024 04:00:09 GMT]]>Yes, that works, thank you!

]]>https://forum.cloudron.io/post/83839https://forum.cloudron.io/post/83839Fri, 23 Feb 2024 04:00:09 GMT<![CDATA[Reply to Reading env variables with custom app on Fri, 23 Feb 2024 03:39:35 GMT]]>First, I'd define them explicitly in the startup script, to see if the exec can see them then.

So instead of source .env , export ENV=KEY

]]>https://forum.cloudron.io/post/83836https://forum.cloudron.io/post/83836Fri, 23 Feb 2024 03:39:35 GMT<![CDATA[Reply to Reading env variables with custom app on Fri, 23 Feb 2024 03:20:24 GMT]]>How would this look like then?

]]>https://forum.cloudron.io/post/83834https://forum.cloudron.io/post/83834Fri, 23 Feb 2024 03:20:24 GMT<![CDATA[Reply to Reading env variables with custom app on Fri, 23 Feb 2024 02:44:30 GMT]]>No, that's a different part of the build/install process.

The envs need to be available as you launch the app.

]]>https://forum.cloudron.io/post/83833https://forum.cloudron.io/post/83833Fri, 23 Feb 2024 02:44:30 GMT<![CDATA[Reply to Reading env variables with custom app on Fri, 23 Feb 2024 02:42:54 GMT]]>Do you mean to put the exact keys into the dockerfile? I tried that with ENV SECRET_KEY_BASE=KEY, but it didn't work.

]]>https://forum.cloudron.io/post/83832https://forum.cloudron.io/post/83832Fri, 23 Feb 2024 02:42:54 GMT<![CDATA[Reply to Reading env variables with custom app on Thu, 22 Feb 2024 20:27:13 GMT]]>what if you included them as part of the exec?

]]>https://forum.cloudron.io/post/83818https://forum.cloudron.io/post/83818Thu, 22 Feb 2024 20:27:13 GMT<![CDATA[Reply to Reading env variables with custom app on Thu, 22 Feb 2024 20:08:22 GMT]]>Yes, in this format:
SECRET_KEY_BASE=KEY

I learned now that I can run them via Cloudron CLI using cloudron set env, but I wonder if it was still possible to do that automatically.

]]>https://forum.cloudron.io/post/83816https://forum.cloudron.io/post/83816Thu, 22 Feb 2024 20:08:22 GMT<![CDATA[Reply to Reading env variables with custom app on Thu, 22 Feb 2024 19:27:42 GMT]]>are they set in env.list ?

]]>https://forum.cloudron.io/post/83813https://forum.cloudron.io/post/83813Thu, 22 Feb 2024 19:27:42 GMT