How can I access Docker set Environment Variables From a Cron Job

Question

I\'ve recently tried running a cron job from within a linked docker container and run into an issue. My main docker container is linked to a postgres container and its port numb

Answer 1

The environment is set, but not available to the cron job. To fix that, you can do these two simple things

1) Save the env to a file in your ENTRYPOINT or CMD

CMD env > /tmp/.MyApp.env && /bin/MyApp

2) Then read that env into your cron command like this:

0 5 * * * . /tmp/.MyApp.env; /bin/MyApp