Fix image reference in the testing dockerfile.
Fix image reference in the testing dockerfile.


AzuraCast/AzuraCast,SlvrEagle23/AzuraCast,SlvrEagle23/AzuraCast,SlvrEagle23/AzuraCast,AzuraCast/AzuraCast,SlvrEagle23/AzuraCast,AzuraCast/AzuraCast,SlvrEagle23/AzuraCast,AzuraCast/AzuraCast