Dynamic PHP_EXTENSIONS

[mhemrg]

Hi, great job 👍
I want to set PHP_EXTENSIONS variable dynamically in my Dockerfile.

ONBUILD ENV PHP_EXTENSIONS=$(cat /var/www/html/exts.txt)

But Docker doesn't allow it. Can you please help me to do it?

[moufmouf]

Hi @mhemrg ,

What are you looking to do exactly? And what base image are you using?

If you are using the fat image, I guess this should work?

Could you show me more of your Dockerfile?

[mhemrg]

Yes, I'm using the fat image.
It seems that Docker doesn't allow to run a bash script to get the value for an environment variable.
Here is my Dockerfile: https://github.com/liara-ir/laravel-platform/blob/master/Dockerfile
You can see that I've commented out that line.