Add docker-build.bat for building on Windows with Docker Desktop

Initial contribution by Vincent Kocks. Script simplified to fit the
new build setup with a common build/ folder. Build folder can
be deleted on every invocation because it will just be copied
from the docker container anyway.

Co-authored-by: Vincent Kocks <engineering@vingenuity.net>

docker-build.bat

@@ -0,0 +1,40 @@
+@echo off
+setlocal enabledelayedexpansion
+
+:: Static Environment Variables
+set BUILD_OUTPUT_PATH=build\docker
+set IMAGE_NAME=djhackers/segatools-build:latest
+set CONTAINER_NAME=segatools-build
+
+:: Main Execution
+docker build . -t %IMAGE_NAME%
+
+if ERRORLEVEL 1 (
+    goto failure
+)
+
+docker create --name %CONTAINER_NAME% %IMAGE_NAME%
+
+if ERRORLEVEL 1 (
+    goto failure
+)
+
+rd /s /q "!BUILD_OUTPUT_PATH!"
+mkdir "!BUILD_OUTPUT_PATH!"
+
+docker cp %CONTAINER_NAME%:/segatools/build/zip %BUILD_OUTPUT_PATH%
+
+docker rm -f %CONTAINER_NAME% > nul
+
+goto success
+
+:failure
+echo segatools Docker build FAILED!
+goto finish
+
+:success
+echo segatools Docker build completed successfully.
+goto finish
+
+:finish
+pause