How to set docker env variable if not present?

Asked Sep 01 '20 at 06:11

Active Sep 01 '20 at 06:11

Viewed 499 times

I mean something like this:

docker run -e VAR_FINAL=${VAR1} OR ${VAR_DEFAULT} some_awesome_image

If VAR1 is present then VAR_FINAL=${VAR1} else VAR_FINAL=${VAR_DEAFULT}

asked Sep 01 '20 at 06:11

Irina

2

I guess the standard way of doing this is `VAR1=${VAR1:-$DEFAULT_VAR}` not sure with docker though. – Cyclonecode Sep 01 '20 at 06:15
1

I think this will help [Conditional ENV in Dockerfile](https://stackoverflow.com/questions/37057468/conditional-env-in-dockerfile) – Jatin Mehrotra Sep 01 '20 at 06:16
1

This is a helpful resource https://manifold.co/blog/arguments-and-variables-in-docker-94746642f64b – Vishakha Lall Sep 01 '20 at 06:21

0 Answers0