docker: add DUNITER_PRUNING_PROFILE variable

Values:

• default: default duniter pruning configuration
• archive: set --state-pruning archive --blocks-pruning archive
• light: set --blocks-pruning 14400 (keep one day of blocks history)

Closes #102 (closed).

added RN-silent label

To test DUNITER_PRUNING_PROFILE=archive I've restarted and fully sync'ed my RPC node with archive pruning profile. I was then able to certify 1000i100 via Gecko connected to this node which was previously impossible when it was in default mode due to the currently stopped finalization.

EDIT: current disk space is about 7GB vs 3.4GB for my smith node with default pruning profile.

Testing all profiles:

• pini-gdev-rpc-archive (archive) = 7GB
• pini-gdev-rpc-light (light) < 1GB
• pini-gdev-smith (default) = 3.4GB

LGTM.

marked this merge request as ready

requested review from @HugoTrentesaux

added 2 commits

• 1d2bb1b9 - 1 commit from branch master
• cee8975b - docker: add DUNITER_PRUNING_PROFILE variable

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merged