Merge pull request #718 from huang195/feat/demo-installer #287

Job	Run time
build-and-push (authbridge-envoy, ./authbridge, cmd/authbridge-envoy/Dockerfile)	12m 27s
build-and-push (authbridge-lite, ./authbridge, cmd/authbridge-proxy/Dockerfile, GO_BUILD_TAGS=exc...	7m 24s
build-and-push (authbridge-cpex, ./authbridge, cmd/authbridge-cpex/Dockerfile)	7m 17s
build-and-push (proxy-init, ./authbridge/proxy-init, Dockerfile.init)	36s
build-and-push (authbridge, ./authbridge, cmd/authbridge-proxy/Dockerfile)	12m 19s
build-and-push (sparc-service, ./authbridge/sparc-service, Dockerfile)	16m 39s
	56m 42s

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