Try using SqlPackage instead:
sqlpackage.exe /Action:Import /tsn:MyServer /tdn:worldwide /tu:MyUserName /tp:MySecretPwd /sf:c:\sql\WideWorldImporters-Standard.bacpac
The command will import the bacpac file to Azure. The parameters used are the following:
/Action is used to indicate if we are going to import, export, publish, and extract data.
/tsn is used to define the Target Server Name.
/tdn is the name of the new database to be created.
/tu is the Target User. It is the Server Admin Login.
/tp is the Target Password. It is the password defined.
/sf is the source file.