Document config initialization with envs

[vk496]

Documentation of feature from ipfs/kubo#8326

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[johnnymatthews]

Thanks for your help here @vk496. I've made some minor tweaks.

Blocked

Gonna wait on ipfs/kubo#8326 before this gets merged.

[vk496]

Thank you @johnnymatthews

Just one thing that I was not sure how to deal: indicate minimum required version.

Most Docker users expect environment override as a basic feature. They will see the instructions for using it and would try it, in the best case, with the latest stable version (which will not do what they expect and not fail)

[johnnymatthews]

indicate minimum required version - @vk496

Minimum version of IPFS? Or Docker? Or both?

[vk496]

Minimum version of IPFS? Or Docker? Or both?

Docker images of IPFS. https://hub.docker.com/r/ipfs/go-ipfs/tags

[lidel]

We decided on a different approach, as this one had some gaps.
See ipfs/kubo#8326 (comment)