Workaround for packr bug

scripts/build.bat

@@ -11,11 +11,15 @@ for /f %%i in ('git rev-parse HEAD') do set GITHASH=%%i
 echo git hash: %GITHASH%
 echo building / installing
 cd %GOPATH%\src\github.com\midstar\mediaweb
-REM packr2 has a bug in Windows where absolute paths are generated instead
-REM of relative paths. We use --legacy to fix this
-REM set PACKRCMD=packr2 --legacy
-REM echo %PACKRCMD%
-REM %PACKRCMD%
-set INSTALLCMD=packr2 build -ldflags="-X 'main.applicationBuildTime=%DATE% %TIME%' -X main.applicationVersion=%VERSION% -X main.applicationGitHash=%GITHASH%" github.com/midstar/mediaweb
+set PACKRCMD=packr2 
+echo %PACKRCMD%
+%PACKRCMD%
+REM There is a bug in packr that creates absolute paths in main-packr.go on some
+REM build machines (uncertain why). Replace main-packr.go with a new file
+echo Replacing main-packr.go due to a bug in packr library
+echo // +build !skippackr > main-packr.go
+echo package main >> main-packr.go
+echo import _ "github.com/midstar/mediaweb/packrd" >> main-packr.go
+set INSTALLCMD=go build -ldflags="-X 'main.applicationBuildTime=%DATE% %TIME%' -X main.applicationVersion=%VERSION% -X main.applicationGitHash=%GITHASH%" github.com/midstar/mediaweb
 echo %INSTALLCMD%
 %INSTALLCMD%