S3 file adapter docs missing parameters

[mtrezza]

The S3 file adapter is missing some parameters that have been added over time.

Suggestions for parameters to add to doc:

baseUrl

• Description: The base URL the file adapter uses to determine the file location for direct access.
• Note: Optional. Default: null. To be used when directAccess=true. When set the file adapter returns a file URL in format baseUrl/bucketPrefix + filename. Example for baseUrl='http://domain.com/folder' and bucketPrefix='prefix_' the returned file location is http://domain.com/folder/prefix_file.txt.

baseUrlDirect

• Description: Is true if the file adapter should ignore the bucket prefix when determining the file location for direct access.
• Note: Optional. Default: false. To be used when directAccess=true and baseUrl is set. When set to true, the file adapter returns a file URL in format baseUrl/filename. Example for baseUrl='http://domain.com/folder' and baseUrlDirect=true the returned file location is http://domain.com/folder/file.txt.

globalCacheControl

• Description: The Cache-Control http header to set in the file request.
• Note: Optional. Default: null. Example: public, max-age=86400 for 24 hrs caching. More info here.

It seems worth to include the interplay of these parameters with the directAccess.

Found some references here:
https://github.com/parse-community/parse-server-s3-adapter
#1857
parse-community/parse-server-s3-adapter#13

Are the above parameter details understandable and correct?

[acinader]

would you be willing to open a pull request for this change?

[mtrezza]

PR merged