One easy and free solution is to use a parameterised batch file (there are more elegant solutions), this is just a basic example.
Save the following as deploy.bat:
SET FOLDER=%1
SET SERVER=%2
SET DB=%3
for %%f in (%FOLDER%\*.sql) do sqlcmd -S %SERVER% -d %DB% -E -i %%f > %%f.log
Then Execute the batch file passing 3 parameters
deploy.bat C:\temp\Scripts MYSQLServer MySQLDB
Obviously you can (and should) add additonal logic for error handling, but as a start this will do what you need.
Nowadays, you can use the "kind of new" FORFILES command to make your life just a little easier.
https://technet.microsoft.com/en-us/library/cc753551(v=ws.11).aspx