* Update sealing just once when  externally importing many blocks (#1541)

Fixes Issue #1372

* Fixing deadlock in miner (#1569)

* Fixing deadlock in miner
* Adding more comments

* v1.2.2

* Fixed warning

* Changing some logging levels

* Skipping invalid nonce errors

Fix the reseal mechanism.

Update Dockerfile ubuntu-aarch64

Update Ubuntu-arm Dockerfile

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bump status page v0.5.1

Update CentOS Dockerfile

Update Dockerfile ubuntu-aarch64

Update Ubuntu-arm Dockerfile

Update Ubuntu-jit Dockerfile

Update Ubuntu Dockerfile

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