Docker - Duniter wrapper + Entrypoint can survive a config / peers.db loss

Duniter wrapper

/usr/bin/duniter is a script again which does the very minimum so that the duniter command can work from anywhere and without and with --home parameter. the default Duniter home is /var/lib/duniter, but a different one can be set with --home <new_home>.

Survive a config loss

When conf.json is not found and a peer node is defined as DUNITER_SYNC_HOST or DUNITER_PEER_HOST, bootstrap a new conf.json file with the blockchain parameters from this node.

This is enough for duniter to survive a config loss with no need for a full resync.

Survive a peers.db loss

When peers.db is not found and a peer node is defined as DUNITER_SYNC_HOST or DUNITER_PEER_HOST, bootstrap a new peers database using sync --only-peers against this node.

Auto sync against a chunks folder

It is now possible to autosync against a chunks folder from a dex export. It only needs these settings:

• DUNITER_AUTO_SYNC=true
• DUNITER_SYNC_HOST=<path_to_chunks_folder>
• DUNITER_PEER_HOST=<node_to_get_peers_from>

changed the description

@pini-gh review effectuée :)

changed the description

added 4 commits

• 893c25d7 - build(docker): WORKDIR = Duniter home
• c364820a - build(docker): entrypoint: use 'set -uo pipefail'
• 4bba966c - build(docker): bootstrap conf.json and peers.db
• 57780c75 - ref(docker) home_default -> profile_default

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@librelois Les modifs ont été faites.

added 1 commit

• 92d5949d - doc(docker): fix volume /etc/duniter description

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Je refais une tentative de fix pour la description du volume /etc/duniter dans la doc pour docker. On verra bien...

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approved this merge request

review ok: y a plus qu'a tester :)