feat: push to Docker sha and allow workflow dispatch (#639) #258

Job	Run time
reth (linux/arm64, ubuntu-24.04-arm, jemalloc,optimism)	26m 57s
geth (linux/arm64, ubuntu-24.04-arm)	3m 15s
geth (linux/amd64, ubuntu-24.04)	3m 55s
reth (linux/amd64, ubuntu-24.04, jemalloc,asm-keccak,optimism)	30m 2s
nethermind (linux/arm64, ubuntu-24.04-arm)	2m 57s
nethermind (linux/amd64, ubuntu-24.04)	3m 19s
merge-nethermind	25s
merge-geth	23s
merge-reth	26s
	1h 11m 39s

Provide feedback