feature:document support multiple version

[falser101]

What's the purpose of this PR

document support multiple version

Which issue(s) this PR fixes:

Fixes #4327

[codecov-commenter]

Codecov Report

Merging #4452 (ab064a3) into master (3440475) will increase coverage by 0.03%.
The diff coverage is n/a.

@@             Coverage Diff              @@
##             master    #4452      +/-   ##
============================================
+ Coverage     53.54%   53.57%   +0.03%     
  Complexity     2692     2692              
============================================
  Files           488      488              
  Lines         15229    15229              
  Branches       1587     1587              
============================================
+ Hits           8154     8159       +5     
+ Misses         6518     6514       -4     
+ Partials        557      556       -1     

Impacted Files	Coverage Δ
...mework/apollo/portal/component/PortalSettings.java	65.62% <0.00%> (+7.81%)	⬆️

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[falser101]

What kind of version style do you want？
@nobodyiam

[nobodyiam]

Currently, apolloconfig.com refers to the latest version of the docs folder.
By supporting multiple versions of documentation, users could switch to different versions of the docs folder, e.g. when user chooses 1.9.2, then it should refer to the 1.9.2 tag.
I'm not sure how that could be achieved, but it should behave like this way.

[falser101]

Maybe we need to create version folder in docs and to put different versions of the files in the corresponding version folder.
@nobodyiam

[nobodyiam]

Maybe we need to create version folder in docs and to put different versions of the files in the corresponding version folder. @nobodyiam

Currently, this seems the way to go. @Anilople do you have any suggestions?

[falser101]

@Anilople

[Anilople]

Maybe we need to create version folder in docs and to put different versions of the files in the corresponding version folder. @nobodyiam

Currently, this seems the way to go. @Anilople do you have any suggestions?

That will consume large cost to maintain it.

Reference to different tag seems better.

Can we combine them together? i.e generate the version folder during CI rather than commit them to the git repo directly.

[nobodyiam]

generate the version folder during CI rather than commit them to the git repo directly.

It will be best to do so during CI as this is the most consistent way.
If we can't do so during CI, then we need to add a step to copy the docs to a version folder when releasing a new version.

[falser101]

It will be best to do so during CI as this is the most consistent way. If we can't do so during CI, then we need to add a step to copy the docs to a version folder when releasing a new version.

What should I do if we generate the version folder during CI? i don't kown how to do that
@nobodyiam @Anilople

[nobodyiam]

There is a proposal in docsify that apollo uses to render the sites: docsifyjs/docsify#1289.
However, there doesn't seem to be any progress...