chore: fix google cloud run installation docs

[sebastianiv21]

Description

Provide a concise summary of the changes made in this pull request

• Added a prerequisite to co-locate Cloud Run, Filestore, and the VPC connector in one region.
• Updated install steps to include Cloud Run NFS volume mount setup for Filestore at /appsmith-stacks.
• Simplified env var table: removed Filestore-specific vars and added HOSTNAME=cloudrun alongside existing Appsmith settings.

Pull request type

Check the appropriate box:

• Review Fixes
• Documentation Overhaul
• Feature/Story
  • Link one or more Engineering Tickets
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• A-Force
• Error in documentation
• Maintenance

Documentation tickets

Link to one or more documentation tickets:

Checklist

From the below options, select the ones that are applicable:

• Checked for Grammarly suggestions.
• Adhered to the writing checklist.
• Adhered to the media checklist.
• Verified and updated cross-references or added redirect rules.
• Tested the redirect rules on deploy preview.
• Validated the modifications made to the content on the deploy preview.
• Validated the CSS modifications on different screen sizes.

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Project	Deployment	Review	Updated (UTC)
appsmith-docs	Ready	Preview, Comment	Dec 23, 2025 10:26pm