Update README.md

[kpol-lgx]

Adding methods to config nfs-provisioner on Linux/ARM machines.

What type of PR is this?

/kind documentation

What this PR does / why we need it:

The Docker image used in the nfs-server.yaml file, specifically itsthenetwork/nfs-server-alpine, has the tag latest and is exclusively designed for linux/amd64 architectures. Although there are tag versions available for linux/arm architectures in docker hub, the image with linux/arm tag fails to function properly on OpenEuler 22.03 LTS armv8 machines. I speculate that this might be due to the fact that the linux/arm version is actually optimized for Apple's chips, hence its incompatibility with generic ARM machines.

So I've added instructions to deploy/example/nfs-provisioner/README.md on how to manually create an NFS server image and modify the nfs-server.yaml file.

Which issue(s) this PR fixes:

None

Special notes for your reviewer:

Does this PR introduce a user-facing change?:

none

[linux-foundation-easycla]

• ✅login: kpol-lgx / (d39a772)

The committers listed above are authorized under a signed CLA.

[k8s-ci-robot]

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[k8s-ci-robot]

Hi @kpol-lgx. Thanks for your PR.

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[andyzhangx]

can you sign the cla? thx

[coveralls]

Pull Request Test Coverage Report for Build 10278077672

Details

• 0 of 0 changed or added relevant lines in 0 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage remained the same at 78.793%

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Totals
Change from base Build 10277065833:	0.0%
Covered Lines:	888
Relevant Lines:	1127

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💛 - Coveralls

[kpol-lgx]

can you sign the cla? thx

I have signed the cla. :)

[andyzhangx]

/ok-to-test
/lgtm

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: andyzhangx, kpol-lgx

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Needs approval from an approver in each of these files:

• OWNERS [andyzhangx]

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