[Feature]: login to synology account

[KhawZhenXuan]

Is your proposal related to a problem?

Failed to login to synology account

Describe the solution you'd like.

make it able to login to synology account

Describe alternatives you've considered.

nope

Additional context

No response

[LaurensdeGraaff]

You have to add a valid serial number to you docker setup. See also #218