ARM64 builds

[vdo]

@sethforprivacy The current Dockerfile builds and runs for arm64. Is it worth adding multi-arch build images? The hashrate may be very low for arm64 devices, but I still see some use cases.

[sethforprivacy]

Theoretically enabled via 65211c0, building now!

[sethforprivacy]

Can you test the latest build on arm64, @vdo? Built successfully: https://github.com/sethforprivacy/p2pool-docker/actions/runs/2834674777

[sethforprivacy]

Runs perfectly on amd64 for me.

[vdo]

Works fine in my RPi so far

vdo@phnx:/opt/xmr.sh $ uname -a
Linux phnx 5.15.32-v8+ #1538 SMP PREEMPT Thu Mar 31 19:40:39 BST 2022 aarch64 GNU/Linux
vdo@phnx:/opt/xmr.sh $ docker logs p2pool
2022-08-10 18:36:51.3593 Log started
2022-08-10 18:36:51.3595 Log failed to open p2pool.log
2022-08-10 18:36:51.3658 P2Pool v2.2.1 (built with GCC/9.4.0 on Aug 10 2022)
2022-08-10 18:36:51.3704 SideChain network type  = mainnet
2022-08-10 18:36:51.3705 SideChain using default config
2022-08-10 18:36:51.3705 SideChain pool name     = default
2022-08-10 18:36:51.3705 SideChain block time    = 10 seconds
2022-08-10 18:36:51.3705 SideChain min diff      = 100000
2022-08-10 18:36:51.3705 SideChain PPLNS window  = 2160 blocks
2022-08-10 18:36:51.3705 SideChain uncle penalty = 20%
2022-08-10 18:36:51.3706 SideChain generating consensus ID
2022-08-10 18:36:51.3706 SideChain consensus ID = 22af7ee7************************************************4407f918
2022-08-10 18:36:51.3711 RandomX_Hasher couldn't allocate RandomX dataset using large pages
2022-08-10 18:36:51.3715 RandomX_Hasher couldn't allocate RandomX cache using large pages
2022-08-10 18:36:51.3718 RandomX_Hasher couldn't allocate RandomX cache using large pages
2022-08-10 18:36:51.3719 RandomX_Hasher allocated 2592 MB
2022-08-10 18:36:51.3726 ConsoleCommands event loop started
2022-08-10 18:36:51.4754 P2Pool monerod is busy syncing, trying again in 1 second
2022-08-10 18:36:52.7323 P2Pool monerod is busy syncing, trying again in 1 second