Persist state (and Station ID) across Docker upgrades about core

[bajtos]

Since we can't be 100% sure that the state is persisted outside of the running Docker container, I am not sure if Station Core can enforce this in a meaningful way. But! Maybe we can incentivise station instances that are old enough at the Meridian protocol level, e.g. by doubling the reward for instances older than 1 month. That way Station operators will have at least some motivation to comply.

[bajtos]

Update docker documentation

We should explain to operators how to fix Error: EACCES: permission denied, mkdir errors they may encounter if the Docker daemon does not have permission to write to the state directory on the host.

See #456 (comment)

[csmasterpath2023]

Has this feature already been implemented in the current version? I used the following command to create a container, but it failed. Can you help me？

docker run --name station --detach --env STATE_ROOT=/state --env FIL_WALLET_ADDRESS=0x000000000000000000000000000000000000dEaD ghcr.io/filecoin-station/core:20.4.1 -v /tmp/state1:/state

[juliangruber]

This hasn't been implemented yet. Can you please open a new issue, with this message and the error you received?