Upgrade bitcoind; Add non-root testing user to Dockerfile.dev
Upgrade bitcoind; Add non-root testing user to Dockerfile.dev

gubatron/openbazaar-go,OpenBazaar/openbazaar-go,hoffmabc/openbazaar-go,hoffmabc/openbazaar-go,OpenBazaar/openbazaar-go,gubatron/openbazaar-go,OpenBazaar/openbazaar-go,hoffmabc/openbazaar-go,gubatron/openbazaar-go