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in DevOps and Agile by (12.7k points)
I want to add a volume to my service, but only if the final user gave a folder for it. Otherwise, no volume should be mounted, for the already-prepared image has valid data in a default folder.

That is, I want to do something like; pseudocode:




      if ${VARIABLE} => ${VARIABLE}:/app/folder

Is establishing such a conditional statement doable and definable in a docker-compose file? The only way I see to make this possible is to first define a base docker-compose file, which does not have the volume mount, and the call on a second docker-compose file only if the $VARIABLE is defined. This is fine for a single or few conditions, but gets nasty if there are many.

Any solution?

1 Answer

0 votes
by (29.5k points)
I don't think such things exist as of right now ,one work around that i can think of is

Skip compose, and just dynamically generate your docker run command. This starts to lack portability but some use cases are just easier to script yourself

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