Add environment variable to optionally use local workbox

[longsleep]

To test, add LOCAL_WORKBOX=true to the .env file, then build an app. The build directory should then show a local copy of the workbox runtime libraries and the generated service-worker.js should import from there instead of importing from external Google CDN.

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[Timer]

Closing in favor of #5369, thanks!

[longsleep]

Closing in favor of #5369, thanks!

Well this is not exactly the same - while #5369 ultimately also solves the issue i was hoping that this can be fixed with a smaller option in the next patch release instead of having to wait until #5369 is ready.

[Timer]

Adding configuration for one-off tasks is not something we normally do. In this case, most users are going to be fine with CDN so if you want to opt-out and into the local mode the full override will be the best way to go.

[longsleep]

Adding configuration for one-off tasks is not something we normally do. In this case, most users are going to be fine with CDN so if you want to opt-out and into the local mode the full override will be the best way to go.

I understand - though i doubt that most users are going to be fine with CDN. Imho its more like most users do not use a CSP and thus do not realize that the service worker loads stuff from Google.

In any case the full override is fine but since it is not merged yet, i was wondering if there was a quick solution.