Should still work with DIY gateways

[shawaj]

This container should still work for DIY gateways.

So we need to maintain ability to have file based key in persistent storage for that

This was removed in #25 / #27 but needs to be added back

[pritamghanghas]

@shawaj How do people with DIY gateways manage this file. Do they manually write it. Or they just use the default key. If so, how do they receive credits.

[shawaj]

@pritamghanghas if you check for it worked before you should see.

Basically as follows:

• if there is ECC use that
• if no ECC and no key file in persistent storage, create new key
• if no ECC key and there is a key file in persistent storage, then copy it into place

[shawaj]

hm-gatewayrs/start-gatewayrs.sh

Lines 32 to 46 in ff53631

	if [ -f "/var/data/gateway_key.bin" ]
	then
	echo "Key file already exists"
	echo 'keypair = "/var/data/gateway_key.bin"' >> settings.toml
	else
	echo "Copying key file to persistent storage"
	if ! PUBLIC_KEYS=$(/usr/bin/helium_gateway -c /etc/helium_gateway key info)
	then
	echo "Can't get miner key info"
	exit 1
	else
	cp /etc/helium_gateway/gateway_key.bin /var/data/gateway_key.bin
	echo 'keypair = "/var/data/gateway_key.bin"' >> settings.toml
	fi
	fi