cscli hub update: option --with-content to keep embedded items in index; use it in docker

[mmetc]

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[github-actions]

@mmetc: There are no 'kind' label on this PR. You need a 'kind' label to generate the release automatically.

• /kind feature
• /kind enhancement
• /kind refactoring
• /kind fix
• /kind chore
• /kind dependencies

Details

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[codecov]

Codecov Report

Attention: Patch coverage is 57.69231% with 11 lines in your changes missing coverage. Please review.

Project coverage is 50.97%. Comparing base (c4431b6) to head (99cb522).
Report is 2 commits behind head on master.

Files	Patch %	Lines
pkg/cwhub/remote.go	50.00%	7 Missing and 2 partials ⚠️
cmd/crowdsec-cli/hub.go	75.00%	2 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #3192      +/-   ##
==========================================
+ Coverage   47.75%   50.97%   +3.21%     
==========================================
  Files         329      329              
  Lines       38660    38684      +24     
==========================================
+ Hits        18462    19719    +1257     
+ Misses      18354    17029    -1325     
- Partials     1844     1936      +92     

Flag	Coverage Δ
bats	40.30% <78.94%> (-0.05%)	⬇️
unit-linux	34.53% <0.00%> (?)
unit-windows	28.58% <0.00%> (-0.04%)	⬇️

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