Container to Fail-Fast in the Event of DNS Name-Resolution Failure

Currently func-sbt-to-blob produces a warning when a "Temporary failure in name resolution" occurs, e.g.:

`WARNING:__init__.py:<ENV>.<TOPIC> - Failed to initiate the connection due to exception: [Errno -3] Temporary failure in name resolution Error condition: amqp:socket-error.
`

Needs to fail the container, initiating a restart in order to re-initialise DNS config.