What does this PR do?

At the moment Che-Theia plugins are unpacked at starting IDE step. As result - we have a delay at that step. Please see https://github.com/eclipse/che/issues/20861#issuecomment-1018632823.

The PR allows:

unpack Che-Theia plugins at building images step by default
reduce the delay at starting IDE step
ability to turn On and turn Off unpacking Che-Theia plugins at building images step

The side effect is - enlarged docker image.

Screenshot/screencast of this PR

Please see videos here

https://user-images.githubusercontent.com/5676062/151932025-b20be7d8-b9c3-444a-a792-00b630f1c559.mp4

What issues does this PR fix or reference?

https://github.com/eclipse/che/issues/20861

How to test this PR?

Try to build eclipse/che-theia:nextimage as usual, like ./build.sh --dockerfile:Dockerfile.alpine from the root. By default it should unpack Che-Theia plugins at building an image step.

As result:

no delay at starting IDE step
but enlarged docker image
1. Try to build eclipse/che-theia:nextimage using --compressed-pluginsparameter, like ./build.sh --dockerfile:Dockerfile.alpine --compressed-plugins from the root.

As result:

a delay at starting IDE step
but docker image should have usual size

So, the second use case should have the the same behaviour as we have right now for the main branch.

PR Checklist

As the author of this Pull Request I made sure that:

[x] The Eclipse Contributor Agreement is valid
[x] Code produced is complete
[x] Code builds without errors
[ ] Tests are covering the bugfix
[ ] The repository devfile is up to date and works
[x] Sections What issues does this PR fix or reference and How to test this PR completed
[ ] Relevant user documentation updated
[ ] Relevant contributing documentation updated
[ ] CI/CD changes implemented, documented and communicated
[ ] Optional Companion PR for updating the HappyPath tests is approved and ready to be merged

Reviewers

Reviewers, please comment how you tested the PR when approving it.

Happy Path Channel

HAPPY_PATH_CHANNEL=stable

Codecov Report

Merging #1312 (cf7aaac) into main (c299f59) will increase coverage by 3.13%. The diff coverage is 28.02%.

@@            Coverage Diff             @@
##             main    #1312      +/-   ##
==========================================
+ Coverage   32.78%   35.91%   +3.13%     
==========================================
  Files         290      326      +36     
  Lines        9885    10713     +828     
  Branches     1457     1439      -18     
==========================================
+ Hits         3241     3848     +607     
- Misses       6641     6860     +219     
- Partials        3        5       +2

Impacted Files	Coverage Δ
...theia-about/src/browser/about-che-theia-dialog.tsx	`0.00% <0.00%> (ø)`
...credentials/src/browser/che-credentials-service.ts	`0.00% <0.00%> (ø)`
...entials/src/browser/credentials-frontend-module.ts	`0.00% <0.00%> (ø)`
...eia-credentials/src/common/credentials-protocol.ts	`0.00% <0.00%> (ø)`
...eia-credentials/src/node/che-credentials-server.ts	`0.00% <0.00%> (ø)`
...s/src/node/che-theia-credentials-backend-module.ts	`0.00% <0.00%> (ø)`
...ashboard/src/browser/che-theia-dashboard-module.ts	`0.00% <0.00%> (ø)`
...ia-dashboard/src/browser/theia-dashboard-client.ts	`0.00% <0.00%> (ø)`
...rowser/src/browser/che-mini-browser-environment.ts	`0.00% <0.00%> (ø)`
...in-ext/src/browser/che-sidecar-file-system-main.ts	`100.00% <ø> (ø)`
... and 291 more

Continue to review full report at Codecov.

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eclipse-che / che-theia

fix: Unpack Che-Theia plugins at building image step #1312