feat: allow multiple paths in contentBasePublicPath

[jleifeld]

• This is a bugfix
• This is a feature
• This is a code refactor
• This is a test update
• This is a docs update
• This is a metadata update

For Bugs and Features; did you add new tests?

I add tests to verify that multiple contentBasePublicPath's are working.

Motivation / Use-Case

I need multiple static directories with different paths. The problem there is that there is no global root path for the assets.

Breaking Changes

This PR is free of breaking changes and provide downwards compatibility.

Additional Info

[jsf-clabot]

All committers have signed the CLA.

[codecov]

Codecov Report

Merging #2489 into master will increase coverage by 0.02%.
The diff coverage is 100.00%.

@@ Coverage Diff @@ ## master #2489 +/- ## ========================================== + Coverage 93.53% 93.55% +0.02%  ========================================== Files 34 34 Lines 1314 1319 +5 Branches 375 379 +4 ========================================== + Hits 1229 1234 +5  Misses 83 83 Partials 2 2 

Impacted Files	Coverage Δ
lib/Server.js	96.76% <100.00%> (+0.03%)	⬆️

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[alexander-akait]

I need multiple static directories with different paths. The problem there is that there is no global root path for the assets.

Can you provide real use case?

[jleifeld]

When you have several micro applications which all have custom static folders:

Application 1: /application-one/static/
Application 2: /application-two/static/
Application 3: /application-three/static/

[alexander-akait]

@jleifeld just for information - you have one big app with own content static and multiple micro apps which used in on big app with own statics?

[jleifeld]

Yes, that is the case. The main application is extendable with plugins. These plugins have all their own static folder. In our case we have these static folders:

for the main application: '/administration/static', for the plugins: '/pluginName/static' 

This allows each plugin to have a scoped folder which does not get in conflict with other files from other plugins

[alexander-akait]

/cc @hiroppy @Loonride

[hiroppy]

I'll change the CI code of lint asap.

[hiroppy]

Need to update documentation.
https://github.com/webpack/webpack.js.org

[snitin315]

Need to update documentation.
https://github.com/webpack/webpack.js.org

I will do it if you agree.

[jleifeld]

@snitin315 Of course 👍

[alexander-akait]

@hiroppy Feel free to merge after CI green

[hiroppy]

Thanks