Update Spire version and make Dockerfile support multi-arch build #1193

Job	Run time
checkgomod / checkgomod	23s
docker-build-and-test / push	1m 48s
excludereplace / excludereplace	3s
excludeFmtErrorf / exclude-fmt-errorf	5s
gogenerate / gogenerate	26s
golangci-lint / golangci-lint	35s
shellcheck / shellcheck	14s
restrictNSMDeps / restrict-nsm-deps	3s
yamllint / yamllint	10s
	3m 47s

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